4027666 has 4 divisors (see below), whose sum is σ = 6041502. Its totient is φ = 2013832.

The previous prime is 4027643. The next prime is 4027669. The reversal of 4027666 is 6667204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3530641 + 497025 = 1879^2 + 705^2 .

It is not an unprimeable number, because it can be changed into a prime (4027669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006915 + ... + 1006918.

Almost surely, 2^4027666 is an apocalyptic number.

4027666 is a deficient number, since it is larger than the sum of its proper divisors (2013836).

4027666 is a wasteful number, since it uses less digits than its factorization.

4027666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013835.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 4027666 is about 2006.9045816879. The cubic root of 4027666 is about 159.1052399805.

The spelling of 4027666 in words is "four million, twenty-seven thousand, six hundred sixty-six".