57742687 has 2 divisors, whose sum is σ = 57742688. Its totient is φ = 57742686.

The previous prime is 57742621. The next prime is 57742697. The reversal of 57742687 is 78624775.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57742687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57742697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28871343 + 28871344.

It is an arithmetic number, because the mean of its divisors is an integer number (28871344).

Almost surely, 2^57742687 is an apocalyptic number.

57742687 is a deficient number, since it is larger than the sum of its proper divisors (1).

57742687 is an equidigital number, since it uses as much as digits as its factorization.

57742687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 658560, while the sum is 46.

The square root of 57742687 is about 7598.8609014773. The cubic root of 57742687 is about 386.5143862139.

It can be divided in two parts, 577 and 42687, that added together give a square (43264 = 208²).

The spelling of 57742687 in words is "fifty-seven million, seven hundred forty-two thousand, six hundred eighty-seven".