721364502 has 96 divisors (see below), whose sum is σ = 1655549280. Its totient is φ = 208552960.

The previous prime is 721364489. The next prime is 721364509. The reversal of 721364502 is 205463127.

It is a self number, because there is not a number n which added to its sum of digits gives 721364502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721364509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1564552 + ... + 1565012.

It is an arithmetic number, because the mean of its divisors is an integer number (17245305).

Almost surely, 2^721364502 is an apocalyptic number.

721364502 is an abundant number, since it is smaller than the sum of its proper divisors (934184778).

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

721364502 is a wasteful number, since it uses less digits than its factorization.

721364502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 721364502 is about 26858.2296884959. The cubic root of 721364502 is about 896.8467851395.

The spelling of 721364502 in words is "seven hundred twenty-one million, three hundred sixty-four thousand, five hundred two".