65644252 has 6 divisors (see below), whose sum is σ = 114877448. Its totient is φ = 32822124.

The previous prime is 65644223. The next prime is 65644283. The reversal of 65644252 is 25244656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8205528 + ... + 8205535.

Almost surely, 2^65644252 is an apocalyptic number.

It is an amenable number.

65644252 is a deficient number, since it is larger than the sum of its proper divisors (49233196).

65644252 is a wasteful number, since it uses less digits than its factorization.

65644252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16411067 (or 16411065 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

The square root of 65644252 is about 8102.1140451119. The cubic root of 65644252 is about 403.3966011142.

It can be divided in two parts, 6564 and 4252, that added together give a square (10816 = 104²).

The spelling of 65644252 in words is "sixty-five million, six hundred forty-four thousand, two hundred fifty-two".