561674 has 4 divisors (see below), whose sum is σ = 842514. Its totient is φ = 280836.

The previous prime is 561667. The next prime is 561703. The reversal of 561674 is 476165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 476165 = 5 ⋅95233.

It can be written as a sum of positive squares in only one way, i.e., 413449 + 148225 = 643^2 + 385^2 .

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 561674.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140417 + ... + 140420.

2⁵⁶¹⁶⁷⁴ is an apocalyptic number.

561674 is a deficient number, since it is larger than the sum of its proper divisors (280840).

561674 is a wasteful number, since it uses less digits than its factorization.

561674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280839.

The product of its digits is 5040, while the sum is 29.

The square root of 561674 is about 749.4491310289. The cubic root of 561674 is about 82.5077556223.

The spelling of 561674 in words is "five hundred sixty-one thousand, six hundred seventy-four".