561457677 has 16 divisors (see below), whose sum is σ = 818572608. Its totient is φ = 339482880.

The previous prime is 561457639. The next prime is 561457697. The reversal of 561457677 is 776754165.

It is not a de Polignac number, because 561457677 - 2⁷ = 561457549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561457697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5358 + ... + 33935.

It is an arithmetic number, because the mean of its divisors is an integer number (51160788).

Almost surely, 2^561457677 is an apocalyptic number.

It is an amenable number.

561457677 is a deficient number, since it is larger than the sum of its proper divisors (257114931).

561457677 is a wasteful number, since it uses less digits than its factorization.

561457677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39740.

The product of its digits is 1234800, while the sum is 48.

The square root of 561457677 is about 23695.0981639663. The cubic root of 561457677 is about 824.9716192257.

The spelling of 561457677 in words is "five hundred sixty-one million, four hundred fifty-seven thousand, six hundred seventy-seven".