68642277 has 32 divisors (see below), whose sum is σ = 109154304. Its totient is φ = 37881600.

The previous prime is 68642267. The next prime is 68642279. The reversal of 68642277 is 77224686.

It is not a de Polignac number, because 68642277 - 2⁷ = 68642149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68642279) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15418 + ... + 19364.

It is an arithmetic number, because the mean of its divisors is an integer number (3411072).

Almost surely, 2^68642277 is an apocalyptic number.

It is an amenable number.

68642277 is a deficient number, since it is larger than the sum of its proper divisors (40512027).

68642277 is a wasteful number, since it uses less digits than its factorization.

68642277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009.

The product of its digits is 225792, while the sum is 42.

The square root of 68642277 is about 8285.0634879885. The cubic root of 68642277 is about 409.4465604327.

The spelling of 68642277 in words is "sixty-eight million, six hundred forty-two thousand, two hundred seventy-seven".