68755690 has 32 divisors (see below), whose sum is σ = 126437760. Its totient is φ = 26913600.

The previous prime is 68755669. The next prime is 68755691. The reversal of 68755690 is 9655786.

It is a super-2 number, since 2×68755690² = 9454689814752200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68755690.

It is not an unprimeable number, because it can be changed into a prime (68755691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126820 + ... + 127360.

It is an arithmetic number, because the mean of its divisors is an integer number (3951180).

Almost surely, 2^68755690 is an apocalyptic number.

68755690 is a deficient number, since it is larger than the sum of its proper divisors (57682070).

68755690 is a wasteful number, since it uses less digits than its factorization.

68755690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798.

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 68755690 is about 8291.9050886995. The cubic root of 68755690 is about 409.6719366565.

The spelling of 68755690 in words is "sixty-eight million, seven hundred fifty-five thousand, six hundred ninety".