656611 has 8 divisors (see below), whose sum is σ = 691200. Its totient is φ = 622920.

The previous prime is 656609. The next prime is 656651. The reversal of 656611 is 116656.

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

It is a cyclic number.

It is not a de Polignac number, because 656611 - 2¹ = 656609 is a prime.

It is a super-2 number, since 2×656611² = 862276010642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (656651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1650 + ... + 2008.

It is an arithmetic number, because the mean of its divisors is an integer number (86400).

2⁶⁵⁶⁶¹¹ is an apocalyptic number.

656611 is a deficient number, since it is larger than the sum of its proper divisors (34589).

656611 is a wasteful number, since it uses less digits than its factorization.

656611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449.

The product of its digits is 1080, while the sum is 25.

The square root of 656611 is about 810.3153707045. The cubic root of 656611 is about 86.9165977488.

The spelling of 656611 in words is "six hundred fifty-six thousand, six hundred eleven".