654606489 has 4 divisors (see below), whose sum is σ = 872808656. Its totient is φ = 436404324.

The previous prime is 654606467. The next prime is 654606493. The reversal of 654606489 is 984606456.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 654606489 - 2¹² = 654602393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654606889) 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, 109101079 + ... + 109101084.

It is an arithmetic number, because the mean of its divisors is an integer number (218202164).

Almost surely, 2^654606489 is an apocalyptic number.

It is an amenable number.

654606489 is a deficient number, since it is larger than the sum of its proper divisors (218202167).

654606489 is a wasteful number, since it uses less digits than its factorization.

654606489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218202166.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The square root of 654606489 is about 25585.2787555657. The cubic root of 654606489 is about 868.2806086771.

The spelling of 654606489 in words is "six hundred fifty-four million, six hundred six thousand, four hundred eighty-nine".