478207866 has 16 divisors (see below), whose sum is σ = 966276864. Its totient is φ = 157759104.

The previous prime is 478207843. The next prime is 478207897. The reversal of 478207866 is 668702874.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410250 + ... + 411413.

It is an arithmetic number, because the mean of its divisors is an integer number (60392304).

Almost surely, 2^478207866 is an apocalyptic number.

478207866 is an abundant number, since it is smaller than the sum of its proper divisors (488068998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

478207866 is a wasteful number, since it uses less digits than its factorization.

478207866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821765.

The product of its (nonzero) digits is 903168, while the sum is 48.

The square root of 478207866 is about 21867.9643771431. The cubic root of 478207866 is about 781.9978730676.

The spelling of 478207866 in words is "four hundred seventy-eight million, two hundred seven thousand, eight hundred sixty-six".