77332427 has 2 divisors, whose sum is σ = 77332428. Its totient is φ = 77332426.

The previous prime is 77332403. The next prime is 77332429. The reversal of 77332427 is 72423377.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77332427 - 2²² = 73138123 is a prime.

Together with 77332429, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (77332429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38666213 + 38666214.

It is an arithmetic number, because the mean of its divisors is an integer number (38666214).

Almost surely, 2^77332427 is an apocalyptic number.

77332427 is a deficient number, since it is larger than the sum of its proper divisors (1).

77332427 is an equidigital number, since it uses as much as digits as its factorization.

77332427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49392, while the sum is 35.

The square root of 77332427 is about 8793.8857736498. The cubic root of 77332427 is about 426.0434374951.

The spelling of 77332427 in words is "seventy-seven million, three hundred thirty-two thousand, four hundred twenty-seven".