2117566004 has 6 divisors (see below), whose sum is σ = 3705740514. Its totient is φ = 1058783000.

The previous prime is 2117565997. The next prime is 2117566013. The reversal of 2117566004 is 4006657112.

It can be written as a sum of positive squares in only one way, i.e., 2005248400 + 112317604 = 44780^2 + 10598^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264695747 + ... + 264695754.

It is an arithmetic number, because the mean of its divisors is an integer number (617623419).

Almost surely, 2^2117566004 is an apocalyptic number.

It is an amenable number.

2117566004 is a deficient number, since it is larger than the sum of its proper divisors (1588174510).

2117566004 is a wasteful number, since it uses less digits than its factorization.

2117566004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529391505 (or 529391503 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 2117566004 is about 46017.0186344139. The cubic root of 2117566004 is about 1284.1398360593.

The spelling of 2117566004 in words is "two billion, one hundred seventeen million, five hundred sixty-six thousand, four".