561197700 has 288 divisors, whose sum is σ = 2153195520. Its totient is φ = 122601600.

The previous prime is 561197669. The next prime is 561197729. The reversal of 561197700 is 7791165.

561197700 is a `hidden beast` number, since 561 + 1 + 97 + 7 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 434055 + ... + 435345.

Almost surely, 2^561197700 is an apocalyptic number.

561197700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561197700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1076597760).

561197700 is an abundant number, since it is smaller than the sum of its proper divisors (1591997820).

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

561197700 is a wasteful number, since it uses less digits than its factorization.

561197700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344 (or 1331 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 36.

The square root of 561197700 is about 23689.6116473023. The cubic root of 561197700 is about 824.8442681256.

The spelling of 561197700 in words is "five hundred sixty-one million, one hundred ninety-seven thousand, seven hundred".