857674537 has 2 divisors, whose sum is σ = 857674538. Its totient is φ = 857674536.

The previous prime is 857674529. The next prime is 857674549. The reversal of 857674537 is 735476758.

857674537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 812193001 + 45481536 = 28499^2 + 6744^2 .

It is a cyclic number.

It is not a de Polignac number, because 857674537 - 2³ = 857674529 is a prime.

It is a super-2 number, since 2×857674537² = 1471211222836328738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (857674637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428837268 + 428837269.

It is an arithmetic number, because the mean of its divisors is an integer number (428837269).

Almost surely, 2^857674537 is an apocalyptic number.

It is an amenable number.

857674537 is a deficient number, since it is larger than the sum of its proper divisors (1).

857674537 is an equidigital number, since it uses as much as digits as its factorization.

857674537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4939200, while the sum is 52.

The square root of 857674537 is about 29286.0809430009. The cubic root of 857674537 is about 950.1106194364.

The spelling of 857674537 in words is "eight hundred fifty-seven million, six hundred seventy-four thousand, five hundred thirty-seven".