857672 has 8 divisors (see below), whose sum is σ = 1608150. Its totient is φ = 428832.

The previous prime is 857671. The next prime is 857687. The reversal of 857672 is 276758.

It can be written as a sum of positive squares in only one way, i.e., 857476 + 196 = 926^2 + 14^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (857671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53597 + ... + 53612.

2⁸⁵⁷⁶⁷² is an apocalyptic number.

It is an amenable number.

857672 is a deficient number, since it is larger than the sum of its proper divisors (750478).

857672 is a wasteful number, since it uses less digits than its factorization.

857672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107215 (or 107211 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 857672 is about 926.1058254865. The cubic root of 857672 is about 95.0109682627.

The spelling of 857672 in words is "eight hundred fifty-seven thousand, six hundred seventy-two".