65944516 has 72 divisors (see below), whose sum is σ = 136745280. Its totient is φ = 27720000.

The previous prime is 65944507. The next prime is 65944517. The reversal of 65944516 is 61544956.

It is a happy number.

It is a super-3 number, since 3×65944516³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (65944517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 652866 + ... + 652966.

It is an arithmetic number, because the mean of its divisors is an integer number (1899240).

Almost surely, 2^65944516 is an apocalyptic number.

It is an amenable number.

65944516 is an abundant number, since it is smaller than the sum of its proper divisors (70800764).

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

65944516 is a wasteful number, since it uses less digits than its factorization.

65944516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 204 counting only the distinct ones).

The product of its digits is 129600, while the sum is 40.

The square root of 65944516 is about 8120.6228825134. The cubic root of 65944516 is about 404.0107257878.

The spelling of 65944516 in words is "sixty-five million, nine hundred forty-four thousand, five hundred sixteen".