1566799404 has 24 divisors (see below), whose sum is σ = 3682554288. Its totient is φ = 518453760.

The previous prime is 1566799397. The next prime is 1566799411. The reversal of 1566799404 is 4049976651.

It is an interprime number because it is at equal distance from previous prime (1566799397) and next prime (1566799411).

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, 474877 + ... + 478164.

It is an arithmetic number, because the mean of its divisors is an integer number (153439762).

Almost surely, 2^1566799404 is an apocalyptic number.

It is an amenable number.

1566799404 is an abundant number, since it is smaller than the sum of its proper divisors (2115754884).

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

1566799404 is a wasteful number, since it uses less digits than its factorization.

1566799404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953185 (or 953183 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 51.

The square root of 1566799404 is about 39582.8170296153. The cubic root of 1566799404 is about 1161.4605571872.

The spelling of 1566799404 in words is "one billion, five hundred sixty-six million, seven hundred ninety-nine thousand, four hundred four".