64398818 has 8 divisors (see below), whose sum is σ = 105379920. Its totient is φ = 29272180.

The previous prime is 64398797. The next prime is 64398853. The reversal of 64398818 is 81889346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1463588 + ... + 1463631.

It is an arithmetic number, because the mean of its divisors is an integer number (13172490).

Almost surely, 2^64398818 is an apocalyptic number.

64398818 is a deficient number, since it is larger than the sum of its proper divisors (40981102).

64398818 is a wasteful number, since it uses less digits than its factorization.

64398818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927232.

The product of its digits is 331776, while the sum is 47.

The square root of 64398818 is about 8024.8874135405. The cubic root of 64398818 is about 400.8291509177.

The spelling of 64398818 in words is "sixty-four million, three hundred ninety-eight thousand, eight hundred eighteen".