857346636 has 12 divisors (see below), whose sum is σ = 2000475512. Its totient is φ = 285782208.

The previous prime is 857346619. The next prime is 857346683. The reversal of 857346636 is 636643758.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35722765 + ... + 35722788.

Almost surely, 2^857346636 is an apocalyptic number.

It is an amenable number.

857346636 is an abundant number, since it is smaller than the sum of its proper divisors (1143128876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

857346636 is a wasteful number, since it uses less digits than its factorization.

857346636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71445560 (or 71445558 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 48.

The square root of 857346636 is about 29280.4821681611. The cubic root of 857346636 is about 949.9895237995.

The spelling of 857346636 in words is "eight hundred fifty-seven million, three hundred forty-six thousand, six hundred thirty-six".