68758557 has 16 divisors (see below), whose sum is σ = 110938752. Its totient is φ = 36979200.

The previous prime is 68758531. The next prime is 68758619. The reversal of 68758557 is 75585786.

It is not a de Polignac number, because 68758557 - 2⁶ = 68758493 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68758357) 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 15 ways as a sum of consecutive naturals, for example, 95944 + ... + 96657.

It is an arithmetic number, because the mean of its divisors is an integer number (6933672).

Almost surely, 2^68758557 is an apocalyptic number.

It is an amenable number.

68758557 is a deficient number, since it is larger than the sum of its proper divisors (42180195).

68758557 is a wasteful number, since it uses less digits than its factorization.

68758557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192628.

The product of its digits is 2352000, while the sum is 51.

The square root of 68758557 is about 8292.0779663484. The cubic root of 68758557 is about 409.6776307943.

The spelling of 68758557 in words is "sixty-eight million, seven hundred fifty-eight thousand, five hundred fifty-seven".