65615472 has 60 divisors (see below), whose sum is σ = 197763384. Its totient is φ = 20188800.

The previous prime is 65615471. The next prime is 65615477. The reversal of 65615472 is 27451656.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65615471) 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, 15654 + ... + 19397.

Almost surely, 2^65615472 is an apocalyptic number.

It is an amenable number.

65615472 is an abundant number, since it is smaller than the sum of its proper divisors (132147912).

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

65615472 is a wasteful number, since it uses less digits than its factorization.

65615472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35078 (or 35069 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 65615472 is about 8100.3377707352. The cubic root of 65615472 is about 403.3376396113.

The spelling of 65615472 in words is "sixty-five million, six hundred fifteen thousand, four hundred seventy-two".