721148974 has 96 divisors (see below), whose sum is σ = 1422036000. Its totient is φ = 271514880.

The previous prime is 721148947. The next prime is 721149019. The reversal of 721148974 is 479841127.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 721148974.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4839852 + ... + 4840000.

It is an arithmetic number, because the mean of its divisors is an integer number (14812875).

Almost surely, 2^721148974 is an apocalyptic number.

721148974 is a deficient number, since it is larger than the sum of its proper divisors (700887026).

721148974 is a wasteful number, since it uses less digits than its factorization.

721148974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 331 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The square root of 721148974 is about 26854.2170617577. The cubic root of 721148974 is about 896.7574568145.

The spelling of 721148974 in words is "seven hundred twenty-one million, one hundred forty-eight thousand, nine hundred seventy-four".