64240478 has 8 divisors (see below), whose sum is σ = 96761280. Its totient is φ = 31986720.

The previous prime is 64240469. The next prime is 64240483. The reversal of 64240478 is 87404246.

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

It is a congruent number.

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, 66158 + ... + 67121.

It is an arithmetic number, because the mean of its divisors is an integer number (12095160).

Almost surely, 2^64240478 is an apocalyptic number.

64240478 is a deficient number, since it is larger than the sum of its proper divisors (32520802).

64240478 is a wasteful number, since it uses less digits than its factorization.

64240478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133522.

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 64240478 is about 8015.0157828915. The cubic root of 64240478 is about 400.5003696479.

The spelling of 64240478 in words is "sixty-four million, two hundred forty thousand, four hundred seventy-eight".