561619170 has 192 divisors, whose sum is σ = 1750484736. Its totient is φ = 126904320.

The previous prime is 561619151. The next prime is 561619213. The reversal of 561619170 is 71916165.

It is a happy number.

561619170 is a `hidden beast` number, since 561 + 6 + 1 + 91 + 7 + 0 = 666.

It is a super-2 number, since 2×561619170² = 630832184222977800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 2330250 + ... + 2330490.

It is an arithmetic number, because the mean of its divisors is an integer number (9117108).

Almost surely, 2^561619170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561619170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (875242368).

561619170 is an abundant number, since it is smaller than the sum of its proper divisors (1188865566).

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

561619170 is a wasteful number, since it uses less digits than its factorization.

561619170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 561619170 is about 23698.5056490910. The cubic root of 561619170 is about 825.0507076271.

The spelling of 561619170 in words is "five hundred sixty-one million, six hundred nineteen thousand, one hundred seventy".