689959695 has 16 divisors (see below), whose sum is σ = 1105319520. Its totient is φ = 367517184.

The previous prime is 689959691. The next prime is 689959703. The reversal of 689959695 is 596959986.

It is not a de Polignac number, because 689959695 - 2² = 689959691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689959691) 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, 16294 + ... + 40563.

It is an arithmetic number, because the mean of its divisors is an integer number (69082470).

Almost surely, 2^689959695 is an apocalyptic number.

689959695 is a deficient number, since it is larger than the sum of its proper divisors (415359825).

689959695 is a wasteful number, since it uses less digits than its factorization.

689959695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57674.

The product of its digits is 47239200, while the sum is 66.

The square root of 689959695 is about 26267.0838693601. The cubic root of 689959695 is about 883.6383862345.

The spelling of 689959695 in words is "six hundred eighty-nine million, nine hundred fifty-nine thousand, six hundred ninety-five".