721560002 has 32 divisors (see below), whose sum is σ = 1210349952. Its totient is φ = 320852224.

The previous prime is 721560001. The next prime is 721560013. The reversal of 721560002 is 200065127.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 721560002.

It is not an unprimeable number, because it can be changed into a prime (721560001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59348 + ... + 70464.

It is an arithmetic number, because the mean of its divisors is an integer number (37823436).

Almost surely, 2^721560002 is an apocalyptic number.

721560002 is a deficient number, since it is larger than the sum of its proper divisors (488789950).

721560002 is a wasteful number, since it uses less digits than its factorization.

721560002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11242.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 721560002 is about 26861.8689223218. The cubic root of 721560002 is about 896.9277972164.

The spelling of 721560002 in words is "seven hundred twenty-one million, five hundred sixty thousand, two".