561774 has 8 divisors (see below), whose sum is σ = 1123560. Its totient is φ = 187256.

The previous prime is 561767. The next prime is 561787. The reversal of 561774 is 477165.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

561774 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46809 + ... + 46820.

It is an arithmetic number, because the mean of its divisors is an integer number (140445).

2⁵⁶¹⁷⁷⁴ is an apocalyptic number.

561774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

561774 is a wasteful number, since it uses less digits than its factorization.

561774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93634.

The product of its digits is 5880, while the sum is 30.

The square root of 561774 is about 749.5158437285. The cubic root of 561774 is about 82.5126518705.

It can be divided in two parts, 56 and 1774, that added together give a triangular number (1830 = T₆₀).

The spelling of 561774 in words is "five hundred sixty-one thousand, seven hundred seventy-four".