455661 has 12 divisors (see below), whose sum is σ = 664092. Its totient is φ = 301056.

The previous prime is 455659. The next prime is 455681. The reversal of 455661 is 166554.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 447561 + 8100 = 669^2 + 90^2 .

It is not a de Polignac number, because 455661 - 2¹ = 455659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1645 + ... + 1901.

It is an arithmetic number, because the mean of its divisors is an integer number (55341).

2⁴⁵⁵⁶⁶¹ is an apocalyptic number.

It is an amenable number.

455661 is a deficient number, since it is larger than the sum of its proper divisors (208431).

455661 is a wasteful number, since it uses less digits than its factorization.

455661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 457 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 455661 is about 675.0266661399. The cubic root of 455661 is about 76.9509441852.

The spelling of 455661 in words is "four hundred fifty-five thousand, six hundred sixty-one".