57642667 has 2 divisors, whose sum is σ = 57642668. Its totient is φ = 57642666.

The previous prime is 57642653. The next prime is 57642703. The reversal of 57642667 is 76624675.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57642667 - 2¹⁵ = 57609899 is a prime.

It is not a weakly prime, because it can be changed into another prime (57642617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28821333 + 28821334.

It is an arithmetic number, because the mean of its divisors is an integer number (28821334).

Almost surely, 2^57642667 is an apocalyptic number.

57642667 is a deficient number, since it is larger than the sum of its proper divisors (1).

57642667 is an equidigital number, since it uses as much as digits as its factorization.

57642667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 43.

The square root of 57642667 is about 7592.2767994851. The cubic root of 57642667 is about 386.2910880279.

The spelling of 57642667 in words is "fifty-seven million, six hundred forty-two thousand, six hundred sixty-seven".