561620683 has 4 divisors (see below), whose sum is σ = 604822288. Its totient is φ = 518419080.

The previous prime is 561620681. The next prime is 561620723. The reversal of 561620683 is 386026165.

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 561620683 - 2¹ = 561620681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561620681) 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, 21600783 + ... + 21600808.

It is an arithmetic number, because the mean of its divisors is an integer number (151205572).

Almost surely, 2^561620683 is an apocalyptic number.

561620683 is a deficient number, since it is larger than the sum of its proper divisors (43201605).

561620683 is a wasteful number, since it uses less digits than its factorization.

561620683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43201604.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 561620683 is about 23698.5375709135. The cubic root of 561620683 is about 825.0514485209.

The spelling of 561620683 in words is "five hundred sixty-one million, six hundred twenty thousand, six hundred eighty-three".