673806724625 has 8 divisors (see below), whose sum is σ = 840910792488. Its totient is φ = 539045379600.

The previous prime is 673806724601. The next prime is 673806724687. The reversal of 673806724625 is 526427608376.

It can be written as a sum of positive squares in 4 ways, for example, as 17695384576 + 656111340049 = 133024^2 + 810007^2 .

It is a de Polignac number, because none of the positive numbers 2^k-673806724625 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2695226774 + ... + 2695227023.

It is an arithmetic number, because the mean of its divisors is an integer number (105113849061).

Almost surely, 2^673806724625 is an apocalyptic number.

It is an amenable number.

673806724625 is a deficient number, since it is larger than the sum of its proper divisors (167104067863).

673806724625 is an equidigital number, since it uses as much as digits as its factorization.

673806724625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5390453812 (or 5390453802 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 56.

The spelling of 673806724625 in words is "six hundred seventy-three billion, eight hundred six million, seven hundred twenty-four thousand, six hundred twenty-five".