64430065 has 32 divisors (see below), whose sum is σ = 92171520. Its totient is φ = 42316800.

The previous prime is 64430063. The next prime is 64430077. The reversal of 64430065 is 56003446.

It is not a de Polignac number, because 64430065 - 2¹ = 64430063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64430063) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84285 + ... + 85045.

It is an arithmetic number, because the mean of its divisors is an integer number (2880360).

Almost surely, 2^64430065 is an apocalyptic number.

It is an amenable number.

64430065 is a deficient number, since it is larger than the sum of its proper divisors (27741455).

64430065 is a wasteful number, since it uses less digits than its factorization.

64430065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 64430065 is about 8026.8340583321. The cubic root of 64430065 is about 400.8939693088.

The spelling of 64430065 in words is "sixty-four million, four hundred thirty thousand, sixty-five".