68628507 has 16 divisors (see below), whose sum is σ = 98952192. Its totient is φ = 42143360.

The previous prime is 68628493. The next prime is 68628517. The reversal of 68628507 is 70582686.

It is a cyclic number.

It is not a de Polignac number, because 68628507 - 2⁴ = 68628491 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (68628517) 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, 11919 + ... + 16712.

It is an arithmetic number, because the mean of its divisors is an integer number (6184512).

Almost surely, 2^68628507 is an apocalyptic number.

68628507 is a deficient number, since it is larger than the sum of its proper divisors (30323685).

68628507 is a wasteful number, since it uses less digits than its factorization.

68628507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28698.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 68628507 is about 8284.2324327604. The cubic root of 68628507 is about 409.4191795608.

The spelling of 68628507 in words is "sixty-eight million, six hundred twenty-eight thousand, five hundred seven".