673688801 has 4 divisors (see below), whose sum is σ = 713317572. Its totient is φ = 634060032.

The previous prime is 673688761. The next prime is 673688809. The reversal of 673688801 is 108886376.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 350588176 + 323100625 = 18724^2 + 17975^2 .

It is a cyclic number.

It is not a de Polignac number, because 673688801 - 2¹⁸ = 673426657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673688809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19814360 + ... + 19814393.

It is an arithmetic number, because the mean of its divisors is an integer number (178329393).

Almost surely, 2^673688801 is an apocalyptic number.

It is an amenable number.

673688801 is a deficient number, since it is larger than the sum of its proper divisors (39628771).

673688801 is a wasteful number, since it uses less digits than its factorization.

673688801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39628770.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 673688801 is about 25955.5158107097. The cubic root of 673688801 is about 876.6369578589.

The spelling of 673688801 in words is "six hundred seventy-three million, six hundred eighty-eight thousand, eight hundred one".