864190 has 16 divisors (see below), whose sum is σ = 1574640. Its totient is φ = 341440.

The previous prime is 864169. The next prime is 864191. The reversal of 864190 is 91468.

It is a super-2 number, since 2×864190² = 1493648712200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405 + ... + 1375.

It is an arithmetic number, because the mean of its divisors is an integer number (98415).

2⁸⁶⁴¹⁹⁰ is an apocalyptic number.

864190 is a deficient number, since it is larger than the sum of its proper divisors (710450).

864190 is a wasteful number, since it uses less digits than its factorization.

864190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 864190 is about 929.6182011988. The cubic root of 864190 is about 95.2510442314.

The spelling of 864190 in words is "eight hundred sixty-four thousand, one hundred ninety".