561077787 has 8 divisors (see below), whose sum is σ = 760783680. Its totient is φ = 367711880.

The previous prime is 561077767. The next prime is 561077789. The reversal of 561077787 is 787770165.

561077787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 561077787 - 2¹² = 561073691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561077789) 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, 1584789 + ... + 1585142.

It is an arithmetic number, because the mean of its divisors is an integer number (95097960).

Almost surely, 2^561077787 is an apocalyptic number.

561077787 is a deficient number, since it is larger than the sum of its proper divisors (199705893).

561077787 is a wasteful number, since it uses less digits than its factorization.

561077787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3169993.

The product of its (nonzero) digits is 576240, while the sum is 48.

The square root of 561077787 is about 23687.0805925931. The cubic root of 561077787 is about 824.7855148578.

The spelling of 561077787 in words is "five hundred sixty-one million, seventy-seven thousand, seven hundred eighty-seven".