561796 has 6 divisors (see below), whose sum is σ = 983150. Its totient is φ = 280896.

The previous prime is 561787. The next prime is 561797. The reversal of 561796 is 697165.

It can be written as a sum of positive squares in only one way, i.e., 448900 + 112896 = 670^2 + 336^2 .

It is a super-3 number, since 3×561796³ = 531933304884259008, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (561797) by changing a digit.

561796 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70221 + ... + 70228.

2⁵⁶¹⁷⁹⁶ is an apocalyptic number.

It is an amenable number.

561796 is a deficient number, since it is larger than the sum of its proper divisors (421354).

561796 is a wasteful number, since it uses less digits than its factorization.

561796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140453 (or 140451 counting only the distinct ones).

The product of its digits is 11340, while the sum is 34.

The square root of 561796 is about 749.5305197255. The cubic root of 561796 is about 82.5137289671.

It can be divided in two parts, 56 and 1796, that multiplied together give a triangular number (100576 = T₄₄₈).

The spelling of 561796 in words is "five hundred sixty-one thousand, seven hundred ninety-six".