1597666864 has 40 divisors (see below), whose sum is σ = 3168511488. Its totient is φ = 780064320.

The previous prime is 1597666859. The next prime is 1597666879. The reversal of 1597666864 is 4686667951.

It is a junction number, because it is equal to n+sod(n) for n = 1597666799 and 1597666808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367069 + ... + 371395.

Almost surely, 2^1597666864 is an apocalyptic number.

It is an amenable number.

1597666864 is a deficient number, since it is larger than the sum of its proper divisors (1570844624).

1597666864 is a wasteful number, since it uses less digits than its factorization.

1597666864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4873 (or 4867 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 58.

The square root of 1597666864 is about 39970.8251603591. The cubic root of 1597666864 is about 1169.0383078042.

The spelling of 1597666864 in words is "one billion, five hundred ninety-seven million, six hundred sixty-six thousand, eight hundred sixty-four".