654216606 has 24 divisors (see below), whose sum is σ = 1418082120. Its totient is φ = 217977936.

The previous prime is 654216601. The next prime is 654216631. The reversal of 654216606 is 606612456.

It is a happy number.

654216606 is a `hidden beast` number, since 6 + 5 + 42 + 1 + 6 + 606 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654216601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44296 + ... + 57188.

It is an arithmetic number, because the mean of its divisors is an integer number (59086755).

Almost surely, 2^654216606 is an apocalyptic number.

654216606 is an abundant number, since it is smaller than the sum of its proper divisors (763865514).

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

654216606 is a wasteful number, since it uses less digits than its factorization.

654216606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15720 (or 15717 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 654216606 is about 25577.6583369158. The cubic root of 654216606 is about 868.1081920749.

It can be divided in two parts, 65421 and 6606, that added together give a palindrome (72027).

The spelling of 654216606 in words is "six hundred fifty-four million, two hundred sixteen thousand, six hundred six".