655550166 has 16 divisors (see below), whose sum is σ = 1313613504. Its totient is φ = 218097864.

The previous prime is 655550143. The next prime is 655550167. The reversal of 655550166 is 661055556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655550167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101316 + ... + 107591.

It is an arithmetic number, because the mean of its divisors is an integer number (82100844).

Almost surely, 2^655550166 is an apocalyptic number.

655550166 is an abundant number, since it is smaller than the sum of its proper divisors (658063338).

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

655550166 is a wasteful number, since it uses less digits than its factorization.

655550166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209435.

The product of its (nonzero) digits is 135000, while the sum is 39.

The square root of 655550166 is about 25603.7139102904. The cubic root of 655550166 is about 868.6976444752.

The spelling of 655550166 in words is "six hundred fifty-five million, five hundred fifty thousand, one hundred sixty-six".