64797272 has 8 divisors (see below), whose sum is σ = 121494900. Its totient is φ = 32398632.

The previous prime is 64797253. The next prime is 64797283. The reversal of 64797272 is 27279746.

It is a tau number, because it is divible by the number of its divisors (8).

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, 4049822 + ... + 4049837.

Almost surely, 2^64797272 is an apocalyptic number.

It is an amenable number.

64797272 is a deficient number, since it is larger than the sum of its proper divisors (56697628).

64797272 is a wasteful number, since it uses less digits than its factorization.

64797272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8099665 (or 8099661 counting only the distinct ones).

The product of its digits is 296352, while the sum is 44.

The square root of 64797272 is about 8049.6752729536. The cubic root of 64797272 is about 401.6541335101.

The spelling of 64797272 in words is "sixty-four million, seven hundred ninety-seven thousand, two hundred seventy-two".