65687344 has 10 divisors (see below), whose sum is σ = 127269260. Its totient is φ = 32843664.

The previous prime is 65687339. The next prime is 65687381. The reversal of 65687344 is 44378656.

It is a self number, because there is not a number n which added to its sum of digits gives 65687344.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2052714 + ... + 2052745.

It is an arithmetic number, because the mean of its divisors is an integer number (12726926).

Almost surely, 2^65687344 is an apocalyptic number.

It is an amenable number.

65687344 is a deficient number, since it is larger than the sum of its proper divisors (61581916).

65687344 is a wasteful number, since it uses less digits than its factorization.

65687344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4105467 (or 4105461 counting only the distinct ones).

The product of its digits is 483840, while the sum is 43.

The square root of 65687344 is about 8104.7729147707. The cubic root of 65687344 is about 403.4848513594.

The spelling of 65687344 in words is "sixty-five million, six hundred eighty-seven thousand, three hundred forty-four".