1566655164 has 36 divisors (see below), whose sum is σ = 3966101776. Its totient is φ = 521434368.

The previous prime is 1566655157. The next prime is 1566655169. The reversal of 1566655164 is 4615566651.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1566655169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8104 + ... + 56559.

Almost surely, 2^1566655164 is an apocalyptic number.

It is an amenable number.

1566655164 is an abundant number, since it is smaller than the sum of its proper divisors (2399446612).

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

1566655164 is a wasteful number, since it uses less digits than its factorization.

1566655164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65346 (or 65341 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 1566655164 is about 39580.9949849672. The cubic root of 1566655164 is about 1161.4249146300.

The spelling of 1566655164 in words is "one billion, five hundred sixty-six million, six hundred fifty-five thousand, one hundred sixty-four".