561071677 has 4 divisors (see below), whose sum is σ = 561441600. Its totient is φ = 560701756.

The previous prime is 561071669. The next prime is 561071681. The reversal of 561071677 is 776170165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 776170165 = 5 ⋅155234033.

It is a cyclic number.

It is not a de Polignac number, because 561071677 - 2³ = 561071669 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 (561071627) 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, 182677 + ... + 185722.

It is an arithmetic number, because the mean of its divisors is an integer number (140360400).

Almost surely, 2^561071677 is an apocalyptic number.

It is an amenable number.

561071677 is a deficient number, since it is larger than the sum of its proper divisors (369923).

561071677 is a wasteful number, since it uses less digits than its factorization.

561071677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369922.

The product of its (nonzero) digits is 61740, while the sum is 40.

The square root of 561071677 is about 23686.9516189821. The cubic root of 561071677 is about 824.7825209427.

The spelling of 561071677 in words is "five hundred sixty-one million, seventy-one thousand, six hundred seventy-seven".