64550297 has 12 divisors (see below), whose sum is σ = 75270096. Its totient is φ = 55195560.

The previous prime is 64550281. The next prime is 64550327. The reversal of 64550297 is 79205546.

It is a happy number.

It is not a de Polignac number, because 64550297 - 2⁴ = 64550281 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 64550297.

It is not an unprimeable number, because it can be changed into a prime (64550257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22718 + ... + 25400.

It is an arithmetic number, because the mean of its divisors is an integer number (6272508).

Almost surely, 2^64550297 is an apocalyptic number.

It is an amenable number.

64550297 is a deficient number, since it is larger than the sum of its proper divisors (10719799).

64550297 is a wasteful number, since it uses less digits than its factorization.

64550297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3188 (or 3181 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 64550297 is about 8034.3199463302. The cubic root of 64550297 is about 401.1431818092.

The spelling of 64550297 in words is "sixty-four million, five hundred fifty thousand, two hundred ninety-seven".