4020066 has 12 divisors (see below), whose sum is σ = 8710182. Its totient is φ = 1340016.

The previous prime is 4020031. The next prime is 4020119. The reversal of 4020066 is 6600204.

It can be written as a sum of positive squares in only one way, i.e., 2873025 + 1147041 = 1695^2 + 1071^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 223337 = 4020066 / (4 + 0 + 2 + 0 + 0 + 6 + 6).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111651 + ... + 111686.

Almost surely, 2^4020066 is an apocalyptic number.

4020066 is an abundant number, since it is smaller than the sum of its proper divisors (4690116).

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

4020066 is a wasteful number, since it uses less digits than its factorization.

4020066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223345 (or 223342 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 4020066 is about 2005.0102244128. The cubic root of 4020066 is about 159.0051024825.

The spelling of 4020066 in words is "four million, twenty thousand, sixty-six".