654901889 has 4 divisors (see below), whose sum is σ = 658919856. Its totient is φ = 650883924.

The previous prime is 654901879. The next prime is 654901927. The reversal of 654901889 is 988109456.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654901889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654901859) 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, 2008739 + ... + 2009064.

It is an arithmetic number, because the mean of its divisors is an integer number (164729964).

Almost surely, 2^654901889 is an apocalyptic number.

It is an amenable number.

654901889 is a deficient number, since it is larger than the sum of its proper divisors (4017967).

654901889 is a wasteful number, since it uses less digits than its factorization.

654901889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4017966.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 654901889 is about 25591.0509553633. The cubic root of 654901889 is about 868.4111968112.

The spelling of 654901889 in words is "six hundred fifty-four million, nine hundred one thousand, eight hundred eighty-nine".