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68751001 = 116250091
BaseRepresentation
bin1000001100100…
…00111010011001
311210100220122101
410012100322121
5120100013001
610453323401
71463242144
oct406207231
9153326571
1068751001
1135898710
121b036561
1311322187
1491b905b
156080a01
hex4190e99

68751001 has 4 divisors (see below), whose sum is σ = 75001104. Its totient is φ = 62500900.

The previous prime is 68750999. The next prime is 68751047. The reversal of 68751001 is 10015786.

It is a happy number.

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 not a de Polignac number, because 68751001 - 21 = 68750999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68751091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3125035 + ... + 3125056.

It is an arithmetic number, because the mean of its divisors is an integer number (18750276).

Almost surely, 268751001 is an apocalyptic number.

It is an amenable number.

68751001 is a deficient number, since it is larger than the sum of its proper divisors (6250103).

68751001 is a wasteful number, since it uses less digits than its factorization.

68751001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6250102.

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 68751001 is about 8291.6223382400. The cubic root of 68751001 is about 409.6626235103.

Adding to 68751001 its reverse (10015786), we get a palindrome (78766787).

The spelling of 68751001 in words is "sixty-eight million, seven hundred fifty-one thousand, one".

Divisors: 1 11 6250091 68751001