561794 has 4 divisors (see below), whose sum is σ = 842694. Its totient is φ = 280896.

The previous prime is 561787. The next prime is 561797. The reversal of 561794 is 497165.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 405769 + 156025 = 637^2 + 395^2 .

It is a super-2 number, since 2×561794² = 631224996872, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 561794.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140447 + ... + 140450.

2⁵⁶¹⁷⁹⁴ is an apocalyptic number.

561794 is a deficient number, since it is larger than the sum of its proper divisors (280900).

561794 is a wasteful number, since it uses less digits than its factorization.

561794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280899.

The product of its digits is 7560, while the sum is 32.

The square root of 561794 is about 749.5291855558. The cubic root of 561794 is about 82.5136310504.

The spelling of 561794 in words is "five hundred sixty-one thousand, seven hundred ninety-four".