65660112 has 80 divisors (see below), whose sum is σ = 215402880. Its totient is φ = 18759168.

The previous prime is 65660107. The next prime is 65660117. The reversal of 65660112 is 21106656.

It is a happy number.

65660112 is a `hidden beast` number, since 6 + 56 + 601 + 1 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (65660107) and next prime (65660117).

It is a super-2 number, since 2×65660112² = 8622500615705088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65660117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7833 + ... + 13880.

It is an arithmetic number, because the mean of its divisors is an integer number (2692536).

Almost surely, 2^65660112 is an apocalyptic number.

It is an amenable number.

65660112 is an abundant number, since it is smaller than the sum of its proper divisors (149742768).

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

65660112 is a wasteful number, since it uses less digits than its factorization.

65660112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21737 (or 21725 counting only the distinct ones).

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

The square root of 65660112 is about 8103.0927428976. The cubic root of 65660112 is about 403.4290860854.

Adding to 65660112 its reverse (21106656), we get a palindrome (86766768).

The spelling of 65660112 in words is "sixty-five million, six hundred sixty thousand, one hundred twelve".