864487738 has 16 divisors (see below), whose sum is σ = 1372646880. Its totient is φ = 407632176.

The previous prime is 864487727. The next prime is 864487753. The reversal of 864487738 is 837784468.

It is a happy 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, 170820 + ... + 175807.

It is an arithmetic number, because the mean of its divisors is an integer number (85790430).

Almost surely, 2^864487738 is an apocalyptic number.

864487738 is a deficient number, since it is larger than the sum of its proper divisors (508159142).

864487738 is a wasteful number, since it uses less digits than its factorization.

864487738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346701.

The product of its digits is 7225344, while the sum is 55.

The square root of 864487738 is about 29402.1723347102. The cubic root of 864487738 is about 952.6198187206.

The spelling of 864487738 in words is "eight hundred sixty-four million, four hundred eighty-seven thousand, seven hundred thirty-eight".