654831816 has 16 divisors (see below), whose sum is σ = 1637079600. Its totient is φ = 218277264.

The previous prime is 654831791. The next prime is 654831851. The reversal of 654831816 is 618138456.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13642306 + ... + 13642353.

It is an arithmetic number, because the mean of its divisors is an integer number (102317475).

Almost surely, 2^654831816 is an apocalyptic number.

It is an amenable number.

654831816 is an abundant number, since it is smaller than the sum of its proper divisors (982247784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

654831816 is a wasteful number, since it uses less digits than its factorization.

654831816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27284668 (or 27284664 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 654831816 is about 25589.6818268614. The cubic root of 654831816 is about 868.3802230377.

The spelling of 654831816 in words is "six hundred fifty-four million, eight hundred thirty-one thousand, eight hundred sixteen".