1664896612 has 24 divisors (see below), whose sum is σ = 3023919360. Its totient is φ = 801108000.

The previous prime is 1664896577. The next prime is 1664896621. The reversal of 1664896612 is 2166984661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12237 + ... + 58987.

It is an arithmetic number, because the mean of its divisors is an integer number (125996640).

Almost surely, 2^1664896612 is an apocalyptic number.

It is an amenable number.

1664896612 is a deficient number, since it is larger than the sum of its proper divisors (1359022748).

1664896612 is a wasteful number, since it uses less digits than its factorization.

1664896612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47091 (or 47089 counting only the distinct ones).

The product of its digits is 746496, while the sum is 49.

The square root of 1664896612 is about 40803.1446337167. The cubic root of 1664896612 is about 1185.2112264484.

The spelling of 1664896612 in words is "one billion, six hundred sixty-four million, eight hundred ninety-six thousand, six hundred twelve".