478864684 has 12 divisors (see below), whose sum is σ = 857502184. Its totient is φ = 233864064.

The previous prime is 478864681. The next prime is 478864703. The reversal of 478864684 is 486468874.

It is a super-2 number, since 2×478864684² = 458622771164839712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (478864681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391877 + ... + 1392220.

Almost surely, 2^478864684 is an apocalyptic number.

It is an amenable number.

478864684 is a deficient number, since it is larger than the sum of its proper divisors (378637500).

478864684 is a wasteful number, since it uses less digits than its factorization.

478864684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784144 (or 2784142 counting only the distinct ones).

The product of its digits is 8257536, while the sum is 55.

The square root of 478864684 is about 21882.9770369573. The cubic root of 478864684 is about 782.3557336954.

The spelling of 478864684 in words is "four hundred seventy-eight million, eight hundred sixty-four thousand, six hundred eighty-four".