731974864 has 10 divisors (see below), whose sum is σ = 1418201330. Its totient is φ = 365987424.

The previous prime is 731974849. The next prime is 731974897. The reversal of 731974864 is 468479137.

It can be written as a sum of positive squares in only one way, i.e., 411278400 + 320696464 = 20280^2 + 17908^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22874199 + ... + 22874230.

It is an arithmetic number, because the mean of its divisors is an integer number (141820133).

Almost surely, 2^731974864 is an apocalyptic number.

It is an amenable number.

731974864 is a deficient number, since it is larger than the sum of its proper divisors (686226466).

731974864 is a wasteful number, since it uses less digits than its factorization.

731974864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45748437 (or 45748431 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 49.

The square root of 731974864 is about 27055.0339863028. The cubic root of 731974864 is about 901.2225623844. Note that the first 3 decimals are identical.

The spelling of 731974864 in words is "seven hundred thirty-one million, nine hundred seventy-four thousand, eight hundred sixty-four".