646038495 has 48 divisors (see below), whose sum is σ = 1157738400. Its totient is φ = 333077760.

The previous prime is 646038487. The next prime is 646038509. The reversal of 646038495 is 594830646.

It is not a de Polignac number, because 646038495 - 2³ = 646038487 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 646038495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 159961 + ... + 163949.

It is an arithmetic number, because the mean of its divisors is an integer number (24119550).

Almost surely, 2^646038495 is an apocalyptic number.

646038495 is a deficient number, since it is larger than the sum of its proper divisors (511699905).

646038495 is a wasteful number, since it uses less digits than its factorization.

646038495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4120 (or 4117 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 646038495 is about 25417.2873257553. The cubic root of 646038495 is about 864.4757177996.

The spelling of 646038495 in words is "six hundred forty-six million, thirty-eight thousand, four hundred ninety-five".