567673921 has 4 divisors (see below), whose sum is σ = 568183252. Its totient is φ = 567164592.

The previous prime is 567673913. The next prime is 567673961. The reversal of 567673921 is 129376765.

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 137733696 + 429940225 = 11736^2 + 20735^2 .

It is a cyclic number.

It is not a de Polignac number, because 567673921 - 2³ = 567673913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (567673961) 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, 252990 + ... + 255223.

It is an arithmetic number, because the mean of its divisors is an integer number (142045813).

Almost surely, 2^567673921 is an apocalyptic number.

It is an amenable number.

567673921 is a deficient number, since it is larger than the sum of its proper divisors (509331).

567673921 is a wasteful number, since it uses less digits than its factorization.

567673921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509330.

The product of its digits is 476280, while the sum is 46.

The square root of 567673921 is about 23825.9086080678. The cubic root of 567673921 is about 828.0050414133.

It can be divided in two parts, 5676 and 73921, that added together give a palindrome (79597).

The spelling of 567673921 in words is "five hundred sixty-seven million, six hundred seventy-three thousand, nine hundred twenty-one".