64013199 has 4 divisors (see below), whose sum is σ = 85350936. Its totient is φ = 42675464.

The previous prime is 64013149. The next prime is 64013221. The reversal of 64013199 is 99131046.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64013199 - 2⁹ = 64012687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64013119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10668864 + ... + 10668869.

It is an arithmetic number, because the mean of its divisors is an integer number (21337734).

Almost surely, 2^64013199 is an apocalyptic number.

64013199 is a deficient number, since it is larger than the sum of its proper divisors (21337737).

64013199 is a wasteful number, since it uses less digits than its factorization.

64013199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21337736.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 64013199 is about 8000.8248949718. The cubic root of 64013199 is about 400.0274960265.

The spelling of 64013199 in words is "sixty-four million, thirteen thousand, one hundred ninety-nine".