561765677 has 8 divisors (see below), whose sum is σ = 614930400. Its totient is φ = 508950160.

The previous prime is 561765661. The next prime is 561765683. The reversal of 561765677 is 776567165.

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

It is a cyclic number.

It is not a de Polignac number, because 561765677 - 2⁴ = 561765661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561765637) 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, 83927 + ... + 90372.

It is an arithmetic number, because the mean of its divisors is an integer number (76866300).

Almost surely, 2^561765677 is an apocalyptic number.

It is an amenable number.

561765677 is a deficient number, since it is larger than the sum of its proper divisors (53164723).

561765677 is a wasteful number, since it uses less digits than its factorization.

561765677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174603.

The product of its digits is 1852200, while the sum is 50.

The square root of 561765677 is about 23701.5965074085. The cubic root of 561765677 is about 825.1224437793.

The spelling of 561765677 in words is "five hundred sixty-one million, seven hundred sixty-five thousand, six hundred seventy-seven".