654474138 has 32 divisors (see below), whose sum is σ = 1346155200. Its totient is φ = 212040576.

The previous prime is 654474137. The next prime is 654474181. The reversal of 654474138 is 831474456.

654474138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 654474138.

It is not an unprimeable number, because it can be changed into a prime (654474137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21120 + ... + 41892.

It is an arithmetic number, because the mean of its divisors is an integer number (42067350).

Almost surely, 2^654474138 is an apocalyptic number.

654474138 is an abundant number, since it is smaller than the sum of its proper divisors (691681062).

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

654474138 is a wasteful number, since it uses less digits than its factorization.

654474138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20926.

The product of its digits is 322560, while the sum is 42.

The square root of 654474138 is about 25582.6921570033. The cubic root of 654474138 is about 868.2220872323. Note that the first 3 decimals are identical.

The spelling of 654474138 in words is "six hundred fifty-four million, four hundred seventy-four thousand, one hundred thirty-eight".