561965847 has 8 divisors (see below), whose sum is σ = 757707120. Its totient is φ = 370434240.

The previous prime is 561965843. The next prime is 561965849. The reversal of 561965847 is 748569165.

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

It is not a de Polignac number, because 561965847 - 2² = 561965843 is a prime.

It is a super-2 number, since 2×561965847² = 631611226388854818, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 561965847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561965843) 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, 1052104 + ... + 1052637.

It is an arithmetic number, because the mean of its divisors is an integer number (94713390).

Almost surely, 2^561965847 is an apocalyptic number.

561965847 is a deficient number, since it is larger than the sum of its proper divisors (195741273).

561965847 is a wasteful number, since it uses less digits than its factorization.

561965847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104833.

The product of its digits is 1814400, while the sum is 51.

The square root of 561965847 is about 23705.8188426386. The cubic root of 561965847 is about 825.2204354941.

The spelling of 561965847 in words is "five hundred sixty-one million, nine hundred sixty-five thousand, eight hundred forty-seven".