689935039935 has 8 divisors (see below), whose sum is σ = 1103896063920. Its totient is φ = 367965354624.

The previous prime is 689935039931. The next prime is 689935040029. The reversal of 689935039935 is 539930539986.

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

It is not a de Polignac number, because 689935039935 - 2² = 689935039931 is a prime.

It is a super-2 number, since 2×689935039935² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 689935039935.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689935039931) 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, 22997834650 + ... + 22997834679.

It is an arithmetic number, because the mean of its divisors is an integer number (137987007990).

Almost surely, 2^689935039935 is an apocalyptic number.

689935039935 is a deficient number, since it is larger than the sum of its proper divisors (413961023985).

689935039935 is a wasteful number, since it uses less digits than its factorization.

689935039935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45995669337.

The product of its (nonzero) digits is 212576400, while the sum is 69.

The spelling of 689935039935 in words is "six hundred eighty-nine billion, nine hundred thirty-five million, thirty-nine thousand, nine hundred thirty-five".