64674717 has 4 divisors (see below), whose sum is σ = 86232960. Its totient is φ = 43116476.

The previous prime is 64674713. The next prime is 64674719. The reversal of 64674717 is 71747646.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64674717 - 2² = 64674713 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64674713) 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, 10779117 + ... + 10779122.

It is an arithmetic number, because the mean of its divisors is an integer number (21558240).

Almost surely, 2^64674717 is an apocalyptic number.

It is an amenable number.

64674717 is a deficient number, since it is larger than the sum of its proper divisors (21558243).

64674717 is a wasteful number, since it uses less digits than its factorization.

64674717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21558242.

The product of its digits is 197568, while the sum is 42.

The square root of 64674717 is about 8042.0592512117. The cubic root of 64674717 is about 401.4007494433.

The spelling of 64674717 in words is "sixty-four million, six hundred seventy-four thousand, seven hundred seventeen".