478375665 has 16 divisors (see below), whose sum is σ = 810425088. Its totient is φ = 240125696.

The previous prime is 478375661. The next prime is 478375687. The reversal of 478375665 is 566573874.

It is a cyclic number.

It is not a de Polignac number, because 478375665 - 2² = 478375661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (478375661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937737 + ... + 938246.

It is an arithmetic number, because the mean of its divisors is an integer number (50651568).

Almost surely, 2^478375665 is an apocalyptic number.

It is an amenable number.

478375665 is a deficient number, since it is larger than the sum of its proper divisors (332049423).

478375665 is a wasteful number, since it uses less digits than its factorization.

478375665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876008.

The product of its digits is 4233600, while the sum is 51.

The square root of 478375665 is about 21871.8006803281. The cubic root of 478375665 is about 782.0893277993.

The spelling of 478375665 in words is "four hundred seventy-eight million, three hundred seventy-five thousand, six hundred sixty-five".