561940614 has 12 divisors (see below), whose sum is σ = 1217538036. Its totient is φ = 187313532.

The previous prime is 561940597. The next prime is 561940619. The reversal of 561940614 is 416049165.

561940614 is a `hidden beast` number, since 561 + 94 + 0 + 6 + 1 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561940619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15609444 + ... + 15609479.

It is an arithmetic number, because the mean of its divisors is an integer number (101461503).

Almost surely, 2^561940614 is an apocalyptic number.

561940614 is an abundant number, since it is smaller than the sum of its proper divisors (655597422).

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

561940614 is a wasteful number, since it uses less digits than its factorization.

561940614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31218931 (or 31218928 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 561940614 is about 23705.2866255610. The cubic root of 561940614 is about 825.2080841511.

Adding to 561940614 its reverse (416049165), we get a palindrome (977989779).

The spelling of 561940614 in words is "five hundred sixty-one million, nine hundred forty thousand, six hundred fourteen".