902720668 has 6 divisors (see below), whose sum is σ = 1579761176. Its totient is φ = 451360332.

The previous prime is 902720617. The next prime is 902720711. The reversal of 902720668 is 866027209.

It is a self number, because there is not a number n which added to its sum of digits gives 902720668.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112840080 + ... + 112840087.

Almost surely, 2^902720668 is an apocalyptic number.

It is an amenable number.

902720668 is a deficient number, since it is larger than the sum of its proper divisors (677040508).

902720668 is a wasteful number, since it uses less digits than its factorization.

902720668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225680171 (or 225680169 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 902720668 is about 30045.3102496879. The cubic root of 902720668 is about 966.4612859485.

The spelling of 902720668 in words is "nine hundred two million, seven hundred twenty thousand, six hundred sixty-eight".