254106666 has 32 divisors (see below), whose sum is σ = 616017600. Its totient is φ = 77001840.

The previous prime is 254106661. The next prime is 254106689. The reversal of 254106666 is 666601452.

It is a happy number.

254106666 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 254106666.

It is not an unprimeable number, because it can be changed into a prime (254106661) 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, 213301 + ... + 214488.

It is an arithmetic number, because the mean of its divisors is an integer number (19250550).

Almost surely, 2^254106666 is an apocalyptic number.

254106666 is an abundant number, since it is smaller than the sum of its proper divisors (361910934).

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

254106666 is a wasteful number, since it uses less digits than its factorization.

254106666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427811 (or 427805 counting only the distinct ones).

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

The square root of 254106666 is about 15940.7235093016. The cubic root of 254106666 is about 633.3911914517.

The spelling of 254106666 in words is "two hundred fifty-four million, one hundred six thousand, six hundred sixty-six".