66056113 has 4 divisors (see below), whose sum is σ = 68333940. Its totient is φ = 63778288.

The previous prime is 66056099. The next prime is 66056119. The reversal of 66056113 is 31165066.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17447329 + 48608784 = 4177^2 + 6972^2 .

It is a cyclic number.

It is not a de Polignac number, because 66056113 - 2²⁵ = 32501681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66056119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1138870 + ... + 1138927.

It is an arithmetic number, because the mean of its divisors is an integer number (17083485).

Almost surely, 2^66056113 is an apocalyptic number.

It is an amenable number.

66056113 is a deficient number, since it is larger than the sum of its proper divisors (2277827).

66056113 is a wasteful number, since it uses less digits than its factorization.

66056113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277826.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 66056113 is about 8127.4911873222. The cubic root of 66056113 is about 404.2384979543.

The spelling of 66056113 in words is "sixty-six million, fifty-six thousand, one hundred thirteen".