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68321541 = 322773847
BaseRepresentation
bin1000001001010…
…00000100000101
311202120002112110
410010220010011
5114442242131
610440211233
71456503111
oct404500405
9152502473
1068321541
1135624a92
121aa69b19
1311201862
149106741
155ee8646
hex4128105

68321541 has 4 divisors (see below), whose sum is σ = 91095392. Its totient is φ = 45547692.

The previous prime is 68321531. The next prime is 68321557. The reversal of 68321541 is 14512386.

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 68321541 - 226 = 1212677 is a prime.

It is a super-2 number, since 2×683215412 = 9335665929229362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68321499 and 68321508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68321531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11386921 + ... + 11386926.

It is an arithmetic number, because the mean of its divisors is an integer number (22773848).

Almost surely, 268321541 is an apocalyptic number.

It is an amenable number.

68321541 is a deficient number, since it is larger than the sum of its proper divisors (22773851).

68321541 is a wasteful number, since it uses less digits than its factorization.

68321541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22773850.

The product of its digits is 5760, while the sum is 30.

The square root of 68321541 is about 8265.6845451541. The cubic root of 68321541 is about 408.8078416962.

The spelling of 68321541 in words is "sixty-eight million, three hundred twenty-one thousand, five hundred forty-one".

Divisors: 1 3 22773847 68321541