561575677 has 12 divisors (see below), whose sum is σ = 624538740. Its totient is φ = 504361728.

The previous prime is 561575653. The next prime is 561575681. The reversal of 561575677 is 776575165.

It can be written as a sum of positive squares in 6 ways, for example, as 5134756 + 556440921 = 2266^2 + 23589^2 .

It is not a de Polignac number, because 561575677 - 2¹⁹ = 561051389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561575677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561575477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38652 + ... + 51157.

It is an arithmetic number, because the mean of its divisors is an integer number (52044895).

Almost surely, 2^561575677 is an apocalyptic number.

It is an amenable number.

561575677 is a deficient number, since it is larger than the sum of its proper divisors (62963063).

561575677 is a wasteful number, since it uses less digits than its factorization.

561575677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89872 (or 89859 counting only the distinct ones).

The product of its digits is 1543500, while the sum is 49.

The square root of 561575677 is about 23697.5879996256. The cubic root of 561575677 is about 825.0294091751.

The spelling of 561575677 in words is "five hundred sixty-one million, five hundred seventy-five thousand, six hundred seventy-seven".