68628790 has 32 divisors (see below), whose sum is σ = 129276000. Its totient is φ = 26197248.

The previous prime is 68628787. The next prime is 68628809. The reversal of 68628790 is 9782686.

It is a self number, because there is not a number n which added to its sum of digits gives 68628790.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24481 + ... + 27139.

It is an arithmetic number, because the mean of its divisors is an integer number (4039875).

Almost surely, 2^68628790 is an apocalyptic number.

68628790 is a deficient number, since it is larger than the sum of its proper divisors (60647210).

68628790 is a wasteful number, since it uses less digits than its factorization.

68628790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 68628790 is about 8284.2495133838. The cubic root of 68628790 is about 409.4197423273.

The spelling of 68628790 in words is "sixty-eight million, six hundred twenty-eight thousand, seven hundred ninety".