4006690 has 16 divisors (see below), whose sum is σ = 7335360. Its totient is φ = 1575280.

The previous prime is 4006687. The next prime is 4006699. The reversal of 4006690 is 966004.

It is a super-2 number, since 2×4006690² = 32107129512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4006699) 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, 2806 + ... + 3985.

It is an arithmetic number, because the mean of its divisors is an integer number (458460).

Almost surely, 2^4006690 is an apocalyptic number.

4006690 is a deficient number, since it is larger than the sum of its proper divisors (3328670).

4006690 is a wasteful number, since it uses less digits than its factorization.

4006690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6857.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 4006690 is about 2001.6718012701. The cubic root of 4006690 is about 158.8285535138.

The spelling of 4006690 in words is "four million, six thousand, six hundred ninety".