1566715056 has 20 divisors (see below), whose sum is σ = 4047347352. Its totient is φ = 522238336.

The previous prime is 1566715043. The next prime is 1566715109. The reversal of 1566715056 is 6505176651.

It is a junction number, because it is equal to n+sod(n) for n = 1566714999 and 1566715017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16319901 + ... + 16319996.

Almost surely, 2^1566715056 is an apocalyptic number.

1566715056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1566715056 is an abundant number, since it is smaller than the sum of its proper divisors (2480632296).

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

1566715056 is a wasteful number, since it uses less digits than its factorization.

1566715056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32639908 (or 32639902 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 42.

The square root of 1566715056 is about 39581.7515529568. The cubic root of 1566715056 is about 1161.4397145631.

The spelling of 1566715056 in words is "one billion, five hundred sixty-six million, seven hundred fifteen thousand, fifty-six".