1566450564 has 48 divisors (see below), whose sum is σ = 4236051456. Its totient is φ = 441252000.

The previous prime is 1566450541. The next prime is 1566450629. The reversal of 1566450564 is 4650546651.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125362 + ... + 137289.

It is an arithmetic number, because the mean of its divisors is an integer number (88251072).

Almost surely, 2^1566450564 is an apocalyptic number.

1566450564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1566450564 is an abundant number, since it is smaller than the sum of its proper divisors (2669600892).

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

1566450564 is a wasteful number, since it uses less digits than its factorization.

1566450564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262736 (or 262734 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The square root of 1566450564 is about 39578.4103268436. The cubic root of 1566450564 is about 1161.3743530072.

The spelling of 1566450564 in words is "one billion, five hundred sixty-six million, four hundred fifty thousand, five hundred sixty-four".