68723977 has 24 divisors (see below), whose sum is σ = 83631296. Its totient is φ = 55303776.

The previous prime is 68723971. The next prime is 68723981. The reversal of 68723977 is 77932786.

It is a de Polignac number, because none of the positive numbers 2^k-68723977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68723977.

It is not an unprimeable number, because it can be changed into a prime (68723971) 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, 247963 + ... + 248239.

Almost surely, 2^68723977 is an apocalyptic number.

68723977 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

68723977 is a deficient number, since it is larger than the sum of its proper divisors (14907319).

68723977 is a wasteful number, since it uses less digits than its factorization.

68723977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 374 counting only the distinct ones).

The product of its digits is 889056, while the sum is 49.

The square root of 68723977 is about 8289.9925814201. The cubic root of 68723977 is about 409.6089410261.

The spelling of 68723977 in words is "sixty-eight million, seven hundred twenty-three thousand, nine hundred seventy-seven".