561161682 has 40 divisors (see below), whose sum is σ = 1312096896. Its totient is φ = 178919928.

The previous prime is 561161681. The next prime is 561161683. The reversal of 561161682 is 286161165.

561161682 is a `hidden beast` number, since 561 + 1 + 6 + 16 + 82 = 666.

It is an interprime number because it is at equal distance from previous prime (561161681) and next prime (561161683).

It is not an unprimeable number, because it can be changed into a prime (561161681) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 71578 + ... + 79029.

Almost surely, 2^561161682 is an apocalyptic number.

561161682 is an abundant number, since it is smaller than the sum of its proper divisors (750935214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561161682 is a wasteful number, since it uses less digits than its factorization.

561161682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150644 (or 150635 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 561161682 is about 23688.8514284674. The cubic root of 561161682 is about 824.8266214173.

The spelling of 561161682 in words is "five hundred sixty-one million, one hundred sixty-one thousand, six hundred eighty-two".