485560661 has 4 divisors (see below), whose sum is σ = 489857772. Its totient is φ = 481263552.

The previous prime is 485560639. The next prime is 485560667. The reversal of 485560661 is 166065584.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 201469636 + 284091025 = 14194^2 + 16855^2 .

It is a cyclic number.

It is not a de Polignac number, because 485560661 - 2²⁶ = 418451797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (485560667) 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, 2148386 + ... + 2148611.

It is an arithmetic number, because the mean of its divisors is an integer number (122464443).

Almost surely, 2^485560661 is an apocalyptic number.

It is an amenable number.

485560661 is a deficient number, since it is larger than the sum of its proper divisors (4297111).

485560661 is a wasteful number, since it uses less digits than its factorization.

485560661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4297110.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 485560661 is about 22035.4410212276. The cubic root of 485560661 is about 785.9854345122.

The spelling of 485560661 in words is "four hundred eighty-five million, five hundred sixty thousand, six hundred sixty-one".