3815666 has 8 divisors (see below), whose sum is σ = 5908224. Its totient is φ = 1846260.

The previous prime is 3815653. The next prime is 3815681. The reversal of 3815666 is 6665183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30710 + ... + 30833.

It is an arithmetic number, because the mean of its divisors is an integer number (738528).

Almost surely, 2^3815666 is an apocalyptic number.

3815666 is a deficient number, since it is larger than the sum of its proper divisors (2092558).

3815666 is a wasteful number, since it uses less digits than its factorization.

3815666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61576.

The product of its digits is 25920, while the sum is 35.

The square root of 3815666 is about 1953.3729802575. The cubic root of 3815666 is about 156.2632253339.

The spelling of 3815666 in words is "three million, eight hundred fifteen thousand, six hundred sixty-six".