561694 has 16 divisors (see below), whose sum is σ = 982368. Its totient is φ = 235872.

The previous prime is 561667. The next prime is 561703. The reversal of 561694 is 496165.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364 + ... + 1120.

It is an arithmetic number, because the mean of its divisors is an integer number (61398).

2⁵⁶¹⁶⁹⁴ is an apocalyptic number.

561694 is a deficient number, since it is larger than the sum of its proper divisors (420674).

561694 is a wasteful number, since it uses less digits than its factorization.

561694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819.

The product of its digits is 6480, while the sum is 31.

The square root of 561694 is about 749.4624740439. The cubic root of 561694 is about 82.5087349184.

It can be divided in two parts, 56169 and 4, that multiplied together give a square (224676 = 474²).

The spelling of 561694 in words is "five hundred sixty-one thousand, six hundred ninety-four".