8721002 has 16 divisors (see below), whose sum is σ = 13970880. Its totient is φ = 4072992.

The previous prime is 8720977. The next prime is 8721029. The reversal of 8721002 is 2001278.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227 + ... + 4182.

It is an arithmetic number, because the mean of its divisors is an integer number (873180).

Almost surely, 2^8721002 is an apocalyptic number.

8721002 is a deficient number, since it is larger than the sum of its proper divisors (5249878).

8721002 is a wasteful number, since it uses less digits than its factorization.

8721002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 8721002 is about 2953.1342671812. The cubic root of 8721002 is about 205.8363768101.

The spelling of 8721002 in words is "eight million, seven hundred twenty-one thousand, two".