683899825921 has 8 divisors (see below), whose sum is σ = 737398093824. Its totient is φ = 630528785040.

The previous prime is 683899825913. The next prime is 683899825927. The reversal of 683899825921 is 129528998386.

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 683899825921 - 2³ = 683899825913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (683899825927) 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, 31795585 + ... + 31817086.

It is an arithmetic number, because the mean of its divisors is an integer number (92174761728).

Almost surely, 2^683899825921 is an apocalyptic number.

It is an amenable number.

683899825921 is a deficient number, since it is larger than the sum of its proper divisors (53498267903).

683899825921 is a wasteful number, since it uses less digits than its factorization.

683899825921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63613511.

The product of its digits is 134369280, while the sum is 70.

The spelling of 683899825921 in words is "six hundred eighty-three billion, eight hundred ninety-nine million, eight hundred twenty-five thousand, nine hundred twenty-one".