654555066 has 24 divisors (see below), whose sum is σ = 1438940832. Its totient is φ = 198349800.

The previous prime is 654555023. The next prime is 654555101. The reversal of 654555066 is 660555456.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 450070 + ... + 451521.

It is an arithmetic number, because the mean of its divisors is an integer number (59955868).

Almost surely, 2^654555066 is an apocalyptic number.

654555066 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

654555066 is an abundant number, since it is smaller than the sum of its proper divisors (784385766).

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

654555066 is a wasteful number, since it uses less digits than its factorization.

654555066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901618 (or 901607 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 42.

The square root of 654555066 is about 25584.2738024748. The cubic root of 654555066 is about 868.2578719827.

The spelling of 654555066 in words is "six hundred fifty-four million, five hundred fifty-five thousand, sixty-six".