1568793664 has 21 divisors (see below), whose sum is σ = 3113703831. Its totient is φ = 784238400.

The previous prime is 1568793649. The next prime is 1568793671. The reversal of 1568793664 is 4663978651.

The square root of 1568793664 is 39608.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×1568793664² = 4922227120413089792, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 314389 + ... + 319339.

It is an arithmetic number, because the mean of its divisors is an integer number (148271611).

Almost surely, 2^1568793664 is an apocalyptic number.

1568793664 is the 39608-th square number.

It is an amenable number.

1568793664 is a deficient number, since it is larger than the sum of its proper divisors (1544910167).

1568793664 is an frugal number, since it uses more digits than its factorization.

1568793664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9914 (or 4953 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 55.

The cubic root of 1568793664 is about 1161.9531265808.

The spelling of 1568793664 in words is "one billion, five hundred sixty-eight million, seven hundred ninety-three thousand, six hundred sixty-four".