64478804 has 24 divisors (see below), whose sum is σ = 122730888. Its totient is φ = 29462400.

The previous prime is 64478779. The next prime is 64478833. The reversal of 64478804 is 40887446.

It can be written as a sum of positive squares in 4 ways, for example, as 3794704 + 60684100 = 1948^2 + 7790^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 887 + ... + 11390.

It is an arithmetic number, because the mean of its divisors is an integer number (5113787).

Almost surely, 2^64478804 is an apocalyptic number.

It is an amenable number.

64478804 is a deficient number, since it is larger than the sum of its proper divisors (58252084).

64478804 is a wasteful number, since it uses less digits than its factorization.

64478804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12395 (or 12393 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 64478804 is about 8029.8694883541. The cubic root of 64478804 is about 400.9950310639.

It can be divided in two parts, 6447 and 8804, that added together give a palindrome (15251).

The spelling of 64478804 in words is "sixty-four million, four hundred seventy-eight thousand, eight hundred four".