689935034232021 has 8 divisors (see below), whose sum is σ = 920000500277760. Its totient is φ = 459913128837152.

The previous prime is 689935034232019. The next prime is 689935034232047. The reversal of 689935034232021 is 120232430539986.

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

It is a cyclic number.

It is not a de Polignac number, because 689935034232021 - 2¹ = 689935034232019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689935034232121) 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, 10890125760 + ... + 10890189113.

It is an arithmetic number, because the mean of its divisors is an integer number (115000062534720).

Almost surely, 2^{689935034232021} is an apocalyptic number.

It is an amenable number.

689935034232021 is a deficient number, since it is larger than the sum of its proper divisors (230065466045739).

689935034232021 is a wasteful number, since it uses less digits than its factorization.

689935034232021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21780325435.

The product of its (nonzero) digits is 16796160, while the sum is 57.

The spelling of 689935034232021 in words is "six hundred eighty-nine trillion, nine hundred thirty-five billion, thirty-four million, two hundred thirty-two thousand, twenty-one".