654689161 has 8 divisors (see below), whose sum is σ = 753678720. Its totient is φ = 557065248.

The previous prime is 654689153. The next prime is 654689173. The reversal of 654689161 is 161986456.

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 654689161 - 2³ = 654689153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654689131) 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 7 ways as a sum of consecutive naturals, for example, 340381 + ... + 342298.

It is an arithmetic number, because the mean of its divisors is an integer number (94209840).

Almost surely, 2^654689161 is an apocalyptic number.

It is an amenable number.

654689161 is a deficient number, since it is larger than the sum of its proper divisors (98989559).

654689161 is a wasteful number, since it uses less digits than its factorization.

654689161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682823.

The product of its digits is 311040, while the sum is 46.

The square root of 654689161 is about 25586.8943211168. The cubic root of 654689161 is about 868.3171596300.

The spelling of 654689161 in words is "six hundred fifty-four million, six hundred eighty-nine thousand, one hundred sixty-one".