668002501 has 16 divisors (see below), whose sum is σ = 725788800. Its totient is φ = 612900288.

The previous prime is 668002499. The next prime is 668002519. The reversal of 668002501 is 105200866.

668002501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 668002501 - 2¹ = 668002499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 668002501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668002541) 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, 101530 + ... + 107908.

It is an arithmetic number, because the mean of its divisors is an integer number (45361800).

Almost surely, 2^668002501 is an apocalyptic number.

It is an amenable number.

668002501 is a deficient number, since it is larger than the sum of its proper divisors (57786299).

668002501 is a wasteful number, since it uses less digits than its factorization.

668002501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6588.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 668002501 is about 25845.7443498925. The cubic root of 668002501 is about 874.1635548425.

The spelling of 668002501 in words is "six hundred sixty-eight million, two thousand, five hundred one".