1656885604 has 96 divisors (see below), whose sum is σ = 3374122752. Its totient is φ = 705024000.

The previous prime is 1656885577. The next prime is 1656885611. The reversal of 1656885604 is 4065886561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6874924 + ... + 6875164.

It is an arithmetic number, because the mean of its divisors is an integer number (35147112).

Almost surely, 2^1656885604 is an apocalyptic number.

It is an amenable number.

1656885604 is an abundant number, since it is smaller than the sum of its proper divisors (1717237148).

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

1656885604 is a wasteful number, since it uses less digits than its factorization.

1656885604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 49.

The square root of 1656885604 is about 40704.8597098676. The cubic root of 1656885604 is about 1183.3072030907.

The spelling of 1656885604 in words is "one billion, six hundred fifty-six million, eight hundred eighty-five thousand, six hundred four".