654550689 has 24 divisors (see below), whose sum is σ = 962902080. Its totient is φ = 395184192.

The previous prime is 654550681. The next prime is 654550727. The reversal of 654550689 is 986055456.

It is not a de Polignac number, because 654550689 - 2³ = 654550681 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (654550681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14692 + ... + 39050.

It is an arithmetic number, because the mean of its divisors is an integer number (40120920).

Almost surely, 2^654550689 is an apocalyptic number.

It is an amenable number.

654550689 is a deficient number, since it is larger than the sum of its proper divisors (308351391).

654550689 is a wasteful number, since it uses less digits than its factorization.

654550689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24441 (or 24428 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 48.

The square root of 654550689 is about 25584.1882615025. The cubic root of 654550689 is about 868.2559366359.

The spelling of 654550689 in words is "six hundred fifty-four million, five hundred fifty thousand, six hundred eighty-nine".