731252660 has 48 divisors (see below), whose sum is σ = 1579208400. Its totient is φ = 284304384.

The previous prime is 731252653. The next prime is 731252681. The reversal of 731252660 is 66252137.

731252660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 57123364 + 674129296 = 7558^2 + 25964^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112376 + ... + 118704.

It is an arithmetic number, because the mean of its divisors is an integer number (32900175).

Almost surely, 2^731252660 is an apocalyptic number.

It is an amenable number.

731252660 is an abundant number, since it is smaller than the sum of its proper divisors (847955740).

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

731252660 is a wasteful number, since it uses less digits than its factorization.

731252660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6500 (or 6498 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 731252660 is about 27041.6837493526. The cubic root of 731252660 is about 900.9260673596.

The spelling of 731252660 in words is "seven hundred thirty-one million, two hundred fifty-two thousand, six hundred sixty".