68656977 has 24 divisors (see below), whose sum is σ = 104403936. Its totient is φ = 45077472.

The previous prime is 68656957. The next prime is 68656993. The reversal of 68656977 is 77965686.

It is a happy number.

68656977 is a `hidden beast` number, since 6 + 8 + 6 + 569 + 77 = 666.

It is not a de Polignac number, because 68656977 - 2⁷ = 68656849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68656927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14173 + ... + 18389.

It is an arithmetic number, because the mean of its divisors is an integer number (4350164).

Almost surely, 2^68656977 is an apocalyptic number.

68656977 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

68656977 is a deficient number, since it is larger than the sum of its proper divisors (35746959).

68656977 is an equidigital number, since it uses as much as digits as its factorization.

68656977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4299 (or 4287 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 68656977 is about 8285.9505791430. The cubic root of 68656977 is about 409.4757865166.

The spelling of 68656977 in words is "sixty-eight million, six hundred fifty-six thousand, nine hundred seventy-seven".