64500249 has 8 divisors (see below), whose sum is σ = 93818592. Its totient is φ = 39091040.

The previous prime is 64500239. The next prime is 64500251. The reversal of 64500249 is 94200546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64500249 - 2⁵ = 64500217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64500209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 977244 + ... + 977309.

It is an arithmetic number, because the mean of its divisors is an integer number (11727324).

Almost surely, 2^64500249 is an apocalyptic number.

It is an amenable number.

64500249 is a deficient number, since it is larger than the sum of its proper divisors (29318343).

64500249 is a wasteful number, since it uses less digits than its factorization.

64500249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954567.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 64500249 is about 8031.2047041524. The cubic root of 64500249 is about 401.0394817708.

The spelling of 64500249 in words is "sixty-four million, five hundred thousand, two hundred forty-nine".