64440595 has 8 divisors (see below), whose sum is σ = 80690976. Its totient is φ = 49310976.

The previous prime is 64440559. The next prime is 64440601. The reversal of 64440595 is 59504446.

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 64440595 - 2¹⁷ = 64309523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280062 + ... + 280291.

It is an arithmetic number, because the mean of its divisors is an integer number (10086372).

Almost surely, 2^64440595 is an apocalyptic number.

64440595 is a deficient number, since it is larger than the sum of its proper divisors (16250381).

64440595 is a wasteful number, since it uses less digits than its factorization.

64440595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560381.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 64440595 is about 8027.4899563936. The cubic root of 64440595 is about 400.9158078896.

The spelling of 64440595 in words is "sixty-four million, four hundred forty thousand, five hundred ninety-five".