1655015664 has 40 divisors (see below), whose sum is σ = 4284225792. Its totient is φ = 550540480.

The previous prime is 1655015651. The next prime is 1655015701. The reversal of 1655015664 is 4665105561.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11544 + ... + 58679.

Almost surely, 2^1655015664 is an apocalyptic number.

It is an amenable number.

1655015664 is an abundant number, since it is smaller than the sum of its proper divisors (2629210128).

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

1655015664 is a wasteful number, since it uses less digits than its factorization.

1655015664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70725 (or 70719 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The square root of 1655015664 is about 40681.8837321971. The cubic root of 1655015664 is about 1182.8618803716.

The spelling of 1655015664 in words is "one billion, six hundred fifty-five million, fifteen thousand, six hundred sixty-four".