720161004 has 48 divisors (see below), whose sum is σ = 1856590848. Its totient is φ = 216108288.

The previous prime is 720160963. The next prime is 720161011. The reversal of 720161004 is 400161027.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72052 + ... + 81435.

It is an arithmetic number, because the mean of its divisors is an integer number (38678976).

Almost surely, 2^720161004 is an apocalyptic number.

It is an amenable number.

720161004 is an abundant number, since it is smaller than the sum of its proper divisors (1136429844).

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

720161004 is a wasteful number, since it uses less digits than its factorization.

720161004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153534 (or 153532 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 720161004 is about 26835.8156947017. The cubic root of 720161004 is about 896.3477521184.

The spelling of 720161004 in words is "seven hundred twenty million, one hundred sixty-one thousand, four".