689696624559 has 8 divisors (see below), whose sum is σ = 920860420480. Its totient is φ = 459165289176.

The previous prime is 689696624489. The next prime is 689696624563. The reversal of 689696624559 is 955426696986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 689696624559 - 2²⁷ = 689562406831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689696624599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158112589 + ... + 158116950.

It is an arithmetic number, because the mean of its divisors is an integer number (115107552560).

Almost surely, 2^689696624559 is an apocalyptic number.

689696624559 is a deficient number, since it is larger than the sum of its proper divisors (231163795921).

689696624559 is a wasteful number, since it uses less digits than its factorization.

689696624559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316230269.

The product of its digits is 1511654400, while the sum is 75.

The spelling of 689696624559 in words is "six hundred eighty-nine billion, six hundred ninety-six million, six hundred twenty-four thousand, five hundred fifty-nine".