66904254 has 12 divisors (see below), whose sum is σ = 144959256. Its totient is φ = 22301412.

The previous prime is 66904241. The next prime is 66904261. The reversal of 66904254 is 45240966.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 1858434 + ... + 1858469.

It is an arithmetic number, because the mean of its divisors is an integer number (12079938).

Almost surely, 2^66904254 is an apocalyptic number.

66904254 is an abundant number, since it is smaller than the sum of its proper divisors (78055002).

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

66904254 is a wasteful number, since it uses less digits than its factorization.

66904254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3716911 (or 3716908 counting only the distinct ones).

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

The square root of 66904254 is about 8179.5020630843. The cubic root of 66904254 is about 405.9612466752.

The spelling of 66904254 in words is "sixty-six million, nine hundred four thousand, two hundred fifty-four".