561672629 has 8 divisors (see below), whose sum is σ = 642155520. Its totient is φ = 481250736.

The previous prime is 561672619. The next prime is 561672677. The reversal of 561672629 is 926276165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561672629 is a prime.

It is a super-2 number, since 2×561672629² = 630952284335543282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 561672629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561672619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6572 + ... + 34154.

It is an arithmetic number, because the mean of its divisors is an integer number (80269440).

Almost surely, 2^561672629 is an apocalyptic number.

It is an amenable number.

561672629 is a deficient number, since it is larger than the sum of its proper divisors (80482891).

561672629 is a wasteful number, since it uses less digits than its factorization.

561672629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30499.

The product of its digits is 272160, while the sum is 44.

The square root of 561672629 is about 23699.6335203733. The cubic root of 561672629 is about 825.0768849068.

The spelling of 561672629 in words is "five hundred sixty-one million, six hundred seventy-two thousand, six hundred twenty-nine".