855772 has 6 divisors (see below), whose sum is σ = 1497608. Its totient is φ = 427884.

The previous prime is 855739. The next prime is 855781. The reversal of 855772 is 277558.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106968 + ... + 106975.

2⁸⁵⁵⁷⁷² is an apocalyptic number.

It is an amenable number.

855772 is a deficient number, since it is larger than the sum of its proper divisors (641836).

855772 is a wasteful number, since it uses less digits than its factorization.

855772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213947 (or 213945 counting only the distinct ones).

The product of its digits is 19600, while the sum is 34.

The square root of 855772 is about 925.0794560469. The cubic root of 855772 is about 94.9407571538.

The spelling of 855772 in words is "eight hundred fifty-five thousand, seven hundred seventy-two".