731261668 has 12 divisors (see below), whose sum is σ = 1282339072. Its totient is φ = 364879080.

The previous prime is 731261611. The next prime is 731261761. The reversal of 731261668 is 866162137.

It is a happy number.

731261668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×731261668² = 1069487254172284448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 731261668.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185748 + ... + 189643.

Almost surely, 2^731261668 is an apocalyptic number.

It is an amenable number.

731261668 is a deficient number, since it is larger than the sum of its proper divisors (551077404).

731261668 is a wasteful number, since it uses less digits than its factorization.

731261668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375882 (or 375880 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 731261668 is about 27041.8503065156. The cubic root of 731261668 is about 900.9297667233.

The spelling of 731261668 in words is "seven hundred thirty-one million, two hundred sixty-one thousand, six hundred sixty-eight".