64396659 has 4 divisors (see below), whose sum is σ = 85862216. Its totient is φ = 42931104.

The previous prime is 64396649. The next prime is 64396667. The reversal of 64396659 is 95669346.

It is a happy number.

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

It is not a de Polignac number, because 64396659 - 2⁷ = 64396531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64396639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10732774 + ... + 10732779.

It is an arithmetic number, because the mean of its divisors is an integer number (21465554).

Almost surely, 2^64396659 is an apocalyptic number.

64396659 is a deficient number, since it is larger than the sum of its proper divisors (21465557).

64396659 is a wasteful number, since it uses less digits than its factorization.

64396659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21465556.

The product of its digits is 1049760, while the sum is 48.

The square root of 64396659 is about 8024.7528933918. The cubic root of 64396659 is about 400.8246715404.

The spelling of 64396659 in words is "sixty-four million, three hundred ninety-six thousand, six hundred fifty-nine".