66256113 has 32 divisors (see below), whose sum is σ = 110702592. Its totient is φ = 34243200.

The previous prime is 66256109. The next prime is 66256117. The reversal of 66256113 is 31165266.

It is an interprime number because it is at equal distance from previous prime (66256109) and next prime (66256117).

It is not a de Polignac number, because 66256113 - 2² = 66256109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66256117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53208 + ... + 54438.

It is an arithmetic number, because the mean of its divisors is an integer number (3459456).

Almost surely, 2^66256113 is an apocalyptic number.

It is an amenable number.

66256113 is a deficient number, since it is larger than the sum of its proper divisors (44446479).

66256113 is a wasteful number, since it uses less digits than its factorization.

66256113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485.

The product of its digits is 6480, while the sum is 30.

The square root of 66256113 is about 8139.7858079927. The cubic root of 66256113 is about 404.6460617559.

The spelling of 66256113 in words is "sixty-six million, two hundred fifty-six thousand, one hundred thirteen".