254220666 has 16 divisors (see below), whose sum is σ = 581075904. Its totient is φ = 72634464.

The previous prime is 254220661. The next prime is 254220667. The reversal of 254220666 is 666022452.

It is not an unprimeable number, because it can be changed into a prime (254220661) 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, 3026395 + ... + 3026478.

It is an arithmetic number, because the mean of its divisors is an integer number (36317244).

Almost surely, 2^254220666 is an apocalyptic number.

254220666 is an abundant number, since it is smaller than the sum of its proper divisors (326855238).

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

254220666 is a wasteful number, since it uses less digits than its factorization.

254220666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6052885.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 254220666 is about 15944.2988557039. The cubic root of 254220666 is about 633.4858968256.

The spelling of 254220666 in words is "two hundred fifty-four million, two hundred twenty thousand, six hundred sixty-six".