66112560 has 60 divisors (see below), whose sum is σ = 222030432. Its totient is φ = 17629824.

The previous prime is 66112537. The next prime is 66112561. The reversal of 66112560 is 6521166.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (60).

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (66112561) 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, 45192 + ... + 46631.

Almost surely, 2^66112560 is an apocalyptic number.

66112560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66112560 is an abundant number, since it is smaller than the sum of its proper divisors (155917872).

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

66112560 is a wasteful number, since it uses less digits than its factorization.

66112560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91842 (or 91833 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 66112560 is about 8130.9630425922. The cubic root of 66112560 is about 404.3536099551.

The spelling of 66112560 in words is "sixty-six million, one hundred twelve thousand, five hundred sixty".