1664582337 has 12 divisors (see below), whose sum is σ = 2622978384. Its totient is φ = 1008837720.

The previous prime is 1664582327. The next prime is 1664582363. The reversal of 1664582337 is 7332854661.

1664582337 is a `hidden beast` number, since 1 + 6 + 64 + 582 + 3 + 3 + 7 = 666.

It is not a de Polignac number, because 1664582337 - 2²⁷ = 1530364609 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1664582292 and 1664582301.

It is not an unprimeable number, because it can be changed into a prime (1664582317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8406883 + ... + 8407080.

It is an arithmetic number, because the mean of its divisors is an integer number (218581532).

Almost surely, 2^1664582337 is an apocalyptic number.

It is an amenable number.

1664582337 is a deficient number, since it is larger than the sum of its proper divisors (958396047).

1664582337 is a wasteful number, since it uses less digits than its factorization.

1664582337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16813980 (or 16813977 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 1664582337 is about 40799.2933394685. The cubic root of 1664582337 is about 1185.1366461020.

The spelling of 1664582337 in words is "one billion, six hundred sixty-four million, five hundred eighty-two thousand, three hundred thirty-seven".