662986894120 has 32 divisors (see below), whose sum is σ = 1491776150400. Its totient is φ = 265184866368.

The previous prime is 662986894081. The next prime is 662986894123. The reversal of 662986894120 is 21498689266.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (662986894123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 828421 + ... + 1418539.

It is an arithmetic number, because the mean of its divisors is an integer number (46618004700).

Almost surely, 2^662986894120 is an apocalyptic number.

It is an amenable number.

662986894120 is an abundant number, since it is smaller than the sum of its proper divisors (828789256280).

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

662986894120 is a wasteful number, since it uses less digits than its factorization.

662986894120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618217 (or 618213 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 61.

The spelling of 662986894120 in words is "six hundred sixty-two billion, nine hundred eighty-six million, eight hundred ninety-four thousand, one hundred twenty".