506687994 has 32 divisors (see below), whose sum is σ = 1162298880. Its totient is φ = 163447200.

The previous prime is 506687983. The next prime is 506688001. The reversal of 506687994 is 499786605.

506687994 is a `hidden beast` number, since 506 + 68 + 79 + 9 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 506687994.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149667 + ... + 153014.

It is an arithmetic number, because the mean of its divisors is an integer number (36321840).

Almost surely, 2^506687994 is an apocalyptic number.

506687994 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

506687994 is an abundant number, since it is smaller than the sum of its proper divisors (655610886).

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

506687994 is a wasteful number, since it uses less digits than its factorization.

506687994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302723 (or 302717 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The square root of 506687994 is about 22509.7310956839. The cubic root of 506687994 is about 797.2237065974.

The spelling of 506687994 in words is "five hundred six million, six hundred eighty-seven thousand, nine hundred ninety-four".