864380 has 24 divisors (see below), whose sum is σ = 1980720. Its totient is φ = 314240.

The previous prime is 864379. The next prime is 864407. The reversal of 864380 is 83468.

864380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 1745 + ... + 2184.

It is an arithmetic number, because the mean of its divisors is an integer number (82530).

2⁸⁶⁴³⁸⁰ is an apocalyptic number.

It is an amenable number.

864380 is an abundant number, since it is smaller than the sum of its proper divisors (1116340).

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

864380 is a wasteful number, since it uses less digits than its factorization.

864380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949 (or 3947 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 864380 is about 929.7203880737. The cubic root of 864380 is about 95.2580243215.

The spelling of 864380 in words is "eight hundred sixty-four thousand, three hundred eighty".