509694696 has 96 divisors (see below), whose sum is σ = 1611267840. Its totient is φ = 142521984.

The previous prime is 509694637. The next prime is 509694707. The reversal of 509694696 is 696496905.

It is a happy number.

509694696 is a `hidden beast` number, since 509 + 6 + 9 + 46 + 96 = 666.

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, 12930 + ... + 34446.

It is an arithmetic number, because the mean of its divisors is an integer number (16784040).

Almost surely, 2^509694696 is an apocalyptic number.

509694696 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 509694696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (805633920).

509694696 is an abundant number, since it is smaller than the sum of its proper divisors (1101573144).

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

509694696 is a wasteful number, since it uses less digits than its factorization.

509694696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21583 (or 21576 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 54.

The square root of 509694696 is about 22576.4190251687. The cubic root of 509694696 is about 798.7975142740.

The spelling of 509694696 in words is "five hundred nine million, six hundred ninety-four thousand, six hundred ninety-six".