561994260 has 48 divisors (see below), whose sum is σ = 1578177216. Its totient is φ = 149427712.

The previous prime is 561994253. The next prime is 561994267. The reversal of 561994260 is 62499165.

It is a happy number.

561994260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (561994253) and next prime (561994267).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561994267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7324 + ... + 34316.

It is an arithmetic number, because the mean of its divisors is an integer number (32878692).

Almost surely, 2^561994260 is an apocalyptic number.

It is an amenable number.

561994260 is an abundant number, since it is smaller than the sum of its proper divisors (1016182956).

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

561994260 is a wasteful number, since it uses less digits than its factorization.

561994260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27352 (or 27350 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 561994260 is about 23706.4181183071. The cubic root of 561994260 is about 825.2343429781.

The spelling of 561994260 in words is "five hundred sixty-one million, nine hundred ninety-four thousand, two hundred sixty".