4066578 has 16 divisors (see below), whose sum is σ = 9036960. Its totient is φ = 1355508.

The previous prime is 4066577. The next prime is 4066591. The reversal of 4066578 is 8756604.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4066577) 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, 37600 + ... + 37707.

It is an arithmetic number, because the mean of its divisors is an integer number (564810).

Almost surely, 2^4066578 is an apocalyptic number.

4066578 is an abundant number, since it is smaller than the sum of its proper divisors (4970382).

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

4066578 is a wasteful number, since it uses less digits than its factorization.

4066578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75318 (or 75312 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 4066578 is about 2016.5758106255. The cubic root of 4066578 is about 159.6159800835.

The spelling of 4066578 in words is "four million, sixty-six thousand, five hundred seventy-eight".