857872996 has 6 divisors (see below), whose sum is σ = 1501277750. Its totient is φ = 428936496.

The previous prime is 857872987. The next prime is 857873059. The reversal of 857872996 is 699278758.

It can be written as a sum of positive squares in only one way, i.e., 584962596 + 272910400 = 24186^2 + 16520^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107234121 + ... + 107234128.

Almost surely, 2^857872996 is an apocalyptic number.

It is an amenable number.

857872996 is a deficient number, since it is larger than the sum of its proper divisors (643404754).

857872996 is a wasteful number, since it uses less digits than its factorization.

857872996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214468253 (or 214468251 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 61.

The square root of 857872996 is about 29289.4690289872. The cubic root of 857872996 is about 950.1838964405.

The spelling of 857872996 in words is "eight hundred fifty-seven million, eight hundred seventy-two thousand, nine hundred ninety-six".