65542512 has 80 divisors (see below), whose sum is σ = 195598592. Its totient is φ = 18524160.

The previous prime is 65542507. The next prime is 65542553. The reversal of 65542512 is 21524556.

It is a self number, because there is not a number n which added to its sum of digits gives 65542512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31587 + ... + 33597.

Almost surely, 2^65542512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65542512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97799296).

65542512 is an abundant number, since it is smaller than the sum of its proper divisors (130056080).

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

65542512 is a wasteful number, since it uses less digits than its factorization.

65542512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126 (or 2120 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 65542512 is about 8095.8330022302. The cubic root of 65542512 is about 403.1880893748.

The spelling of 65542512 in words is "sixty-five million, five hundred forty-two thousand, five hundred twelve".