721364162 has 16 divisors (see below), whose sum is σ = 1164481272. Its totient is φ = 333899520.

The previous prime is 721364153. The next prime is 721364167. The reversal of 721364162 is 261463127.

It can be written as a sum of positive squares in 4 ways, for example, as 630562321 + 90801841 = 25111^2 + 9529^2 .

It is not an unprimeable number, because it can be changed into a prime (721364167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171833 + ... + 175980.

Almost surely, 2^721364162 is an apocalyptic number.

721364162 is a deficient number, since it is larger than the sum of its proper divisors (443117110).

721364162 is a wasteful number, since it uses less digits than its factorization.

721364162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347893.

The product of its digits is 12096, while the sum is 32.

The square root of 721364162 is about 26858.2233589640. The cubic root of 721364162 is about 896.8466442362.

The spelling of 721364162 in words is "seven hundred twenty-one million, three hundred sixty-four thousand, one hundred sixty-two".