864497378 has 16 divisors (see below), whose sum is σ = 1401889920. Its totient is φ = 398430576.

The previous prime is 864497369. The next prime is 864497383. The reversal of 864497378 is 873794468.

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, 306026 + ... + 308837.

It is an arithmetic number, because the mean of its divisors is an integer number (87618120).

Almost surely, 2^864497378 is an apocalyptic number.

864497378 is a deficient number, since it is larger than the sum of its proper divisors (537392542).

864497378 is a wasteful number, since it uses less digits than its factorization.

864497378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614921.

The product of its digits is 8128512, while the sum is 56.

The square root of 864497378 is about 29402.3362677186. The cubic root of 864497378 is about 952.6233596311.

The spelling of 864497378 in words is "eight hundred sixty-four million, four hundred ninety-seven thousand, three hundred seventy-eight".