609696681 has 16 divisors (see below), whose sum is σ = 933507840. Its totient is φ = 350064720.

The previous prime is 609696671. The next prime is 609696707. The reversal of 609696681 is 186696906.

It is not a de Polignac number, because 609696681 - 2⁶ = 609696617 is a prime.

It is a super-2 number, since 2×609696681² = 743460085644831522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (609696601) 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, 485575 + ... + 486828.

It is an arithmetic number, because the mean of its divisors is an integer number (58344240).

Almost surely, 2^609696681 is an apocalyptic number.

It is an amenable number.

609696681 is a deficient number, since it is larger than the sum of its proper divisors (323811159).

609696681 is a wasteful number, since it uses less digits than its factorization.

609696681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972436.

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 609696681 is about 24692.0367932660. The cubic root of 609696681 is about 847.9520158153.

The spelling of 609696681 in words is "six hundred nine million, six hundred ninety-six thousand, six hundred eighty-one".