673569801 has 24 divisors (see below), whose sum is σ = 1033119360. Its totient is φ = 421420416.

The previous prime is 673569781. The next prime is 673569803. The reversal of 673569801 is 108965376.

It is a happy number.

673569801 is a `hidden beast` number, since 6 + 7 + 3 + 569 + 80 + 1 = 666.

It is not a de Polignac number, because 673569801 - 2⁵ = 673569769 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (673569803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48796 + ... + 61058.

It is an arithmetic number, because the mean of its divisors is an integer number (43046640).

Almost surely, 2^673569801 is an apocalyptic number.

It is an amenable number.

673569801 is a deficient number, since it is larger than the sum of its proper divisors (359549559).

673569801 is a wasteful number, since it uses less digits than its factorization.

673569801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12645 (or 12642 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 673569801 is about 25953.2233258222. The cubic root of 673569801 is about 876.5853386044.

The spelling of 673569801 in words is "six hundred seventy-three million, five hundred sixty-nine thousand, eight hundred one".