562661 has 4 divisors (see below), whose sum is σ = 613824. Its totient is φ = 511500.

The previous prime is 562651. The next prime is 562663. The reversal of 562661 is 166265.

562661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-562661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 562661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (562663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25565 + ... + 25586.

It is an arithmetic number, because the mean of its divisors is an integer number (153456).

2⁵⁶²⁶⁶¹ is an apocalyptic number.

It is an amenable number.

562661 is a deficient number, since it is larger than the sum of its proper divisors (51163).

562661 is a wasteful number, since it uses less digits than its factorization.

562661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51162.

The product of its digits is 2160, while the sum is 26.

The square root of 562661 is about 750.1073256541. The cubic root of 562661 is about 82.5560561790.

The spelling of 562661 in words is "five hundred sixty-two thousand, six hundred sixty-one".