869620 has 12 divisors (see below), whose sum is σ = 1826244. Its totient is φ = 347840.

The previous prime is 869599. The next prime is 869657. The reversal of 869620 is 26968.

869620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 465124 + 404496 = 682^2 + 636^2 .

It is a congruent number.

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, 21721 + ... + 21760.

It is an arithmetic number, because the mean of its divisors is an integer number (152187).

2⁸⁶⁹⁶²⁰ is an apocalyptic number.

It is an amenable number.

869620 is an abundant number, since it is smaller than the sum of its proper divisors (956624).

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

869620 is a wasteful number, since it uses less digits than its factorization.

869620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43490 (or 43488 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 869620 is about 932.5341816791. The cubic root of 869620 is about 95.4501260924.

The spelling of 869620 in words is "eight hundred sixty-nine thousand, six hundred twenty".