654589681 has 8 divisors (see below), whose sum is σ = 676739264. Its totient is φ = 632674800.

The previous prime is 654589679. The next prime is 654589693. The reversal of 654589681 is 186985456.

654589681 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 a cyclic number.

It is not a de Polignac number, because 654589681 - 2¹ = 654589679 is a prime.

It is a super-2 number, since 2×654589681² = 856975300943363522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654589651) 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, 52995 + ... + 64168.

It is an arithmetic number, because the mean of its divisors is an integer number (84592408).

Almost surely, 2^654589681 is an apocalyptic number.

It is an amenable number.

654589681 is a deficient number, since it is larger than the sum of its proper divisors (22149583).

654589681 is a wasteful number, since it uses less digits than its factorization.

654589681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117351.

The product of its digits is 2073600, while the sum is 52.

The square root of 654589681 is about 25584.9502833209. The cubic root of 654589681 is about 868.2731771460.

The spelling of 654589681 in words is "six hundred fifty-four million, five hundred eighty-nine thousand, six hundred eighty-one".