65516772 has 24 divisors (see below), whose sum is σ = 153792576. Its totient is φ = 21707488.

The previous prime is 65516767. The next prime is 65516783. The reversal of 65516772 is 27761556.

It is a self number, because there is not a number n which added to its sum of digits gives 65516772.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14343 + ... + 18350.

It is an arithmetic number, because the mean of its divisors is an integer number (6408024).

Almost surely, 2^65516772 is an apocalyptic number.

It is an amenable number.

65516772 is an abundant number, since it is smaller than the sum of its proper divisors (88275804).

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

65516772 is a wasteful number, since it uses less digits than its factorization.

65516772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32867 (or 32865 counting only the distinct ones).

The product of its digits is 88200, while the sum is 39.

The square root of 65516772 is about 8094.2431394171. The cubic root of 65516772 is about 403.1353021584.

The spelling of 65516772 in words is "sixty-five million, five hundred sixteen thousand, seven hundred seventy-two".