561470 has 32 divisors (see below), whose sum is σ = 1245888. Its totient is φ = 177408.

The previous prime is 561461. The next prime is 561521. The reversal of 561470 is 74165.

It is an Ulam number.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602 + ... + 1218.

It is an arithmetic number, because the mean of its divisors is an integer number (38934).

2⁵⁶¹⁴⁷⁰ is an apocalyptic number.

561470 is an abundant number, since it is smaller than the sum of its proper divisors (684418).

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

561470 is a wasteful number, since it uses less digits than its factorization.

561470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 561470 is about 749.3130187045. The cubic root of 561470 is about 82.4977654736.

The spelling of 561470 in words is "five hundred sixty-one thousand, four hundred seventy".