857059636 has 12 divisors (see below), whose sum is σ = 1500869412. Its totient is φ = 428239808.

The previous prime is 857059633. The next prime is 857059663. The reversal of 857059636 is 636950758.

It can be written as a sum of positive squares in 2 ways, for example, as 587771536 + 269288100 = 24244^2 + 16410^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 857059636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857059633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65785 + ... + 77728.

It is an arithmetic number, because the mean of its divisors is an integer number (125072451).

Almost surely, 2^857059636 is an apocalyptic number.

It is an amenable number.

857059636 is a deficient number, since it is larger than the sum of its proper divisors (643809776).

857059636 is a wasteful number, since it uses less digits than its factorization.

857059636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145010 (or 145008 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 49.

The square root of 857059636 is about 29275.5808823668. The cubic root of 857059636 is about 949.8835077842.

The spelling of 857059636 in words is "eight hundred fifty-seven million, fifty-nine thousand, six hundred thirty-six".