721337464 has 16 divisors (see below), whose sum is σ = 1357654320. Its totient is φ = 359296320.

The previous prime is 721337437. The next prime is 721337501. The reversal of 721337464 is 464733127.

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 3 ways as a sum of consecutive naturals, for example, 169317 + ... + 173524.

It is an arithmetic number, because the mean of its divisors is an integer number (84853395).

Almost surely, 2^721337464 is an apocalyptic number.

It is an amenable number.

721337464 is a deficient number, since it is larger than the sum of its proper divisors (636316856).

721337464 is a wasteful number, since it uses less digits than its factorization.

721337464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343110 (or 343106 counting only the distinct ones).

The product of its digits is 84672, while the sum is 37.

The square root of 721337464 is about 26857.7263371269. The cubic root of 721337464 is about 896.8355798721.

It can be divided in two parts, 721337 and 464, that added together give a triangular number (721801 = T₁₂₀₁).

The spelling of 721337464 in words is "seven hundred twenty-one million, three hundred thirty-seven thousand, four hundred sixty-four".