853720 has 32 divisors (see below), whose sum is σ = 2196000. Its totient is φ = 292608.

The previous prime is 853717. The next prime is 853733. The reversal of 853720 is 27358.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1245 + ... + 1804.

It is an arithmetic number, because the mean of its divisors is an integer number (68625).

2⁸⁵³⁷²⁰ is an apocalyptic number.

It is an amenable number.

853720 is an abundant number, since it is smaller than the sum of its proper divisors (1342280).

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

853720 is a wasteful number, since it uses less digits than its factorization.

853720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3067 (or 3063 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 853720 is about 923.9696964728. The cubic root of 853720 is about 94.8648123322.

The spelling of 853720 in words is "eight hundred fifty-three thousand, seven hundred twenty".