6664111564 has 24 divisors (see below), whose sum is σ = 12724861968. Its totient is φ = 3028554240.

The previous prime is 6664111541. The next prime is 6664111613. The reversal of 6664111564 is 4651114666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282264 + ... + 304960.

It is an arithmetic number, because the mean of its divisors is an integer number (530202582).

Almost surely, 2^6664111564 is an apocalyptic number.

It is an amenable number.

6664111564 is a deficient number, since it is larger than the sum of its proper divisors (6060750404).

6664111564 is a wasteful number, since it uses less digits than its factorization.

6664111564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29385 (or 29383 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 6664111564 is about 81634.0098488369. The cubic root of 6664111564 is about 1881.8315826708.

The spelling of 6664111564 in words is "six billion, six hundred sixty-four million, one hundred eleven thousand, five hundred sixty-four".