561676437 has 40 divisors (see below), whose sum is σ = 992006400. Its totient is φ = 309881376.

The previous prime is 561676433. The next prime is 561676469. The reversal of 561676437 is 734676165.

561676437 is a `hidden beast` number, since 56 + 167 + 6 + 437 = 666.

It is not a de Polignac number, because 561676437 - 2² = 561676433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561676392 and 561676401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561676433) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 637 + ... + 33522.

It is an arithmetic number, because the mean of its divisors is an integer number (24800160).

Almost surely, 2^561676437 is an apocalyptic number.

It is an amenable number.

561676437 is a deficient number, since it is larger than the sum of its proper divisors (430329963).

561676437 is a wasteful number, since it uses less digits than its factorization.

561676437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34207 (or 34198 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 561676437 is about 23699.7138590321. The cubic root of 561676437 is about 825.0787495076.

The spelling of 561676437 in words is "five hundred sixty-one million, six hundred seventy-six thousand, four hundred thirty-seven".