65328637 has 16 divisors (see below), whose sum is σ = 77075712. Its totient is φ = 54699520.

The previous prime is 65328617. The next prime is 65328661. The reversal of 65328637 is 73682356.

It is a cyclic number.

It is not a de Polignac number, because 65328637 - 2⁷ = 65328509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65328637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65328617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5073 + ... + 12505.

It is an arithmetic number, because the mean of its divisors is an integer number (4817232).

Almost surely, 2^65328637 is an apocalyptic number.

It is an amenable number.

65328637 is a deficient number, since it is larger than the sum of its proper divisors (11747075).

65328637 is a wasteful number, since it uses less digits than its factorization.

65328637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7508.

The product of its digits is 181440, while the sum is 40.

The square root of 65328637 is about 8082.6132531502. The cubic root of 65328637 is about 402.7490571793.

The spelling of 65328637 in words is "sixty-five million, three hundred twenty-eight thousand, six hundred thirty-seven".