478665135 has 24 divisors (see below), whose sum is σ = 893509344. Its totient is φ = 235650240.

The previous prime is 478665071. The next prime is 478665151. The reversal of 478665135 is 531566874.

478665135 is a `hidden beast` number, since 4 + 78 + 66 + 513 + 5 = 666.

It is not a de Polignac number, because 478665135 - 2⁶ = 478665071 is a prime.

It is a super-2 number, since 2×478665135² = 458240622929136450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 408531 + ... + 409700.

It is an arithmetic number, because the mean of its divisors is an integer number (37229556).

Almost surely, 2^478665135 is an apocalyptic number.

478665135 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

478665135 is a deficient number, since it is larger than the sum of its proper divisors (414844209).

478665135 is a wasteful number, since it uses less digits than its factorization.

478665135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818255 (or 818252 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 478665135 is about 21878.4171045348. The cubic root of 478665135 is about 782.2470460709.

The spelling of 478665135 in words is "four hundred seventy-eight million, six hundred sixty-five thousand, one hundred thirty-five".