64056899 has 4 divisors (see below), whose sum is σ = 64517880. Its totient is φ = 63595920.

The previous prime is 64056887. The next prime is 64056907. The reversal of 64056899 is 99865046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99865046 = 2 ⋅49932523.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64056899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64056829) 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, 230282 + ... + 230559.

It is an arithmetic number, because the mean of its divisors is an integer number (16129470).

Almost surely, 2^64056899 is an apocalyptic number.

64056899 is a deficient number, since it is larger than the sum of its proper divisors (460981).

64056899 is a wasteful number, since it uses less digits than its factorization.

64056899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460980.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 64056899 is about 8003.5553974468. Note that the first 3 decimals coincide. The cubic root of 64056899 is about 400.1185044716.

The spelling of 64056899 in words is "sixty-four million, fifty-six thousand, eight hundred ninety-nine".