76687427 has 2 divisors, whose sum is σ = 76687428. Its totient is φ = 76687426.

The previous prime is 76687423. The next prime is 76687489. The reversal of 76687427 is 72478667.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 76687427 - 2² = 76687423 is a prime.

It is a super-2 number, since 2×76687427² = 11761922919760658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (76687423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38343713 + 38343714.

It is an arithmetic number, because the mean of its divisors is an integer number (38343714).

Almost surely, 2^76687427 is an apocalyptic number.

76687427 is a deficient number, since it is larger than the sum of its proper divisors (1).

76687427 is an equidigital number, since it uses as much as digits as its factorization.

76687427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 47.

The square root of 76687427 is about 8757.1357760400. The cubic root of 76687427 is about 424.8556409367.

The spelling of 76687427 in words is "seventy-six million, six hundred eighty-seven thousand, four hundred twenty-seven".