654560661 has 8 divisors (see below), whose sum is σ = 872980384. Its totient is φ = 436257360.

The previous prime is 654560651. The next prime is 654560713. The reversal of 654560661 is 166065456.

654560661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 654560661 - 2⁶ = 654560597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654560651) 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, 15010 + ... + 39171.

It is an arithmetic number, because the mean of its divisors is an integer number (109122548).

Almost surely, 2^654560661 is an apocalyptic number.

It is an amenable number.

654560661 is a deficient number, since it is larger than the sum of its proper divisors (218419723).

654560661 is a wasteful number, since it uses less digits than its factorization.

654560661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58211.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 654560661 is about 25584.3831467558. The cubic root of 654560661 is about 868.2603458713.

The spelling of 654560661 in words is "six hundred fifty-four million, five hundred sixty thousand, six hundred sixty-one".