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68541077 = 116231007
BaseRepresentation
bin1000001010111…
…01101010010101
311202222020200102
410011131222111
5120021303302
610445023445
71461406133
oct405355225
9152866612
1068541077
1135764a20
121ab54b85
131127a767
149162753
15603d702
hex415da95

68541077 has 4 divisors (see below), whose sum is σ = 74772096. Its totient is φ = 62310060.

The previous prime is 68541071. The next prime is 68541079. The reversal of 68541077 is 77014586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68541077 - 218 = 68278933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68541077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68541071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3115493 + ... + 3115514.

It is an arithmetic number, because the mean of its divisors is an integer number (18693024).

Almost surely, 268541077 is an apocalyptic number.

It is an amenable number.

68541077 is a deficient number, since it is larger than the sum of its proper divisors (6231019).

68541077 is a wasteful number, since it uses less digits than its factorization.

68541077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6231018.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 68541077 is about 8278.9538590332. The cubic root of 68541077 is about 409.2452444042.

It can be divided in two parts, 68 and 541077, that added together give a palindrome (541145).

The spelling of 68541077 in words is "sixty-eight million, five hundred forty-one thousand, seventy-seven".

Divisors: 1 11 6231007 68541077