561670 has 8 divisors (see below), whose sum is σ = 1011024. Its totient is φ = 224664.

The previous prime is 561667. The next prime is 561703. The reversal of 561670 is 76165.

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

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 3 ways as a sum of consecutive naturals, for example, 28074 + ... + 28093.

It is an arithmetic number, because the mean of its divisors is an integer number (126378).

2⁵⁶¹⁶⁷⁰ is an apocalyptic number.

561670 is a deficient number, since it is larger than the sum of its proper divisors (449354).

561670 is a wasteful number, since it uses less digits than its factorization.

561670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56174.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 561670 is about 749.4464623974. The cubic root of 561670 is about 82.5075597603.

The spelling of 561670 in words is "five hundred sixty-one thousand, six hundred seventy".