731916648 has 40 divisors (see below), whose sum is σ = 2050046130. Its totient is φ = 243972000.

The previous prime is 731916641. The next prime is 731916667. The reversal of 731916648 is 846619137.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 689692644 + 42224004 = 26262^2 + 6498^2 .

It is not an unprimeable number, because it can be changed into a prime (731916641) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 564103 + ... + 565398.

Almost surely, 2^731916648 is an apocalyptic number.

It is an amenable number.

731916648 is an abundant number, since it is smaller than the sum of its proper divisors (1318129482).

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

731916648 is a wasteful number, since it uses less digits than its factorization.

731916648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129519 (or 1129506 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 731916648 is about 27053.9580837999. The cubic root of 731916648 is about 901.1986695039.

The spelling of 731916648 in words is "seven hundred thirty-one million, nine hundred sixteen thousand, six hundred forty-eight".