64509244 has 6 divisors (see below), whose sum is σ = 112891184. Its totient is φ = 32254620.

The previous prime is 64509229. The next prime is 64509257. The reversal of 64509244 is 44290546.

It is a super-2 number, since 2×64509244² = 8322885122903072, which contains 22 as substring.

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, 8063652 + ... + 8063659.

Almost surely, 2^64509244 is an apocalyptic number.

It is an amenable number.

64509244 is a deficient number, since it is larger than the sum of its proper divisors (48381940).

64509244 is a wasteful number, since it uses less digits than its factorization.

64509244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16127315 (or 16127313 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 64509244 is about 8031.7646877881. The cubic root of 64509244 is about 401.0581234687.

The spelling of 64509244 in words is "sixty-four million, five hundred nine thousand, two hundred forty-four".