857707012 has 12 divisors (see below), whose sum is σ = 1509664716. Its totient is φ = 426374240.

The previous prime is 857707009. The next prime is 857707021. The reversal of 857707012 is 210707758.

It can be written as a sum of positive squares in 2 ways, for example, as 369562176 + 488144836 = 19224^2 + 22094^2 .

It is a super-2 number, since 2×857707012² = 1471322636867936288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619039 + ... + 620422.

It is an arithmetic number, because the mean of its divisors is an integer number (125805393).

Almost surely, 2^857707012 is an apocalyptic number.

It is an amenable number.

857707012 is a deficient number, since it is larger than the sum of its proper divisors (651957704).

857707012 is a wasteful number, since it uses less digits than its factorization.

857707012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239638 (or 1239636 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 37.

The square root of 857707012 is about 29286.6353820305. The cubic root of 857707012 is about 950.1226109521.

The spelling of 857707012 in words is "eight hundred fifty-seven million, seven hundred seven thousand, twelve".