561674931 has 4 divisors (see below), whose sum is σ = 748899912. Its totient is φ = 374449952.

The previous prime is 561674923. The next prime is 561674933. The reversal of 561674931 is 139476165.

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

It is a cyclic number.

It is not a de Polignac number, because 561674931 - 2³ = 561674923 is a prime.

It is a super-2 number, since 2×561674931² = 630957456227709522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (561674933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93612486 + ... + 93612491.

It is an arithmetic number, because the mean of its divisors is an integer number (187224978).

Almost surely, 2^561674931 is an apocalyptic number.

561674931 is a deficient number, since it is larger than the sum of its proper divisors (187224981).

561674931 is a wasteful number, since it uses less digits than its factorization.

561674931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187224980.

The product of its digits is 136080, while the sum is 42.

The square root of 561674931 is about 23699.6820864753. The cubic root of 561674931 is about 825.0780120903.

The spelling of 561674931 in words is "five hundred sixty-one million, six hundred seventy-four thousand, nine hundred thirty-one".