65914644 has 48 divisors (see below), whose sum is σ = 164481408. Its totient is φ = 20471808.

The previous prime is 65914637. The next prime is 65914663. The reversal of 65914644 is 44641956.

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, 19444 + ... + 22580.

It is an arithmetic number, because the mean of its divisors is an integer number (3426696).

Almost surely, 2^65914644 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 65914644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82240704).

65914644 is an abundant number, since it is smaller than the sum of its proper divisors (98566764).

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

65914644 is a wasteful number, since it uses less digits than its factorization.

65914644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3264 (or 3262 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 65914644 is about 8118.7834063978. The cubic root of 65914644 is about 403.9497127226.

The spelling of 65914644 in words is "sixty-five million, nine hundred fourteen thousand, six hundred forty-four".