65660412 has 12 divisors (see below), whose sum is σ = 153207656. Its totient is φ = 21886800.

The previous prime is 65660369. The next prime is 65660417. The reversal of 65660412 is 21406656.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×65660412² = 8622579408019488, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 65660412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65660417) 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, 2735839 + ... + 2735862.

Almost surely, 2^65660412 is an apocalyptic number.

It is an amenable number.

65660412 is an abundant number, since it is smaller than the sum of its proper divisors (87547244).

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

65660412 is a wasteful number, since it uses less digits than its factorization.

65660412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5471708 (or 5471706 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 65660412 is about 8103.1112543269. Note that the first 3 decimals coincide. The cubic root of 65660412 is about 403.4297005048.

The spelling of 65660412 in words is "sixty-five million, six hundred sixty thousand, four hundred twelve".