3691966 has 8 divisors (see below), whose sum is σ = 5829480. Its totient is φ = 1748808.

The previous prime is 3691957. The next prime is 3692021. The reversal of 3691966 is 6691963.

It is a happy number.

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

It is a super-2 number, since 2×3691966² = 27261225890312, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 48541 + ... + 48616.

It is an arithmetic number, because the mean of its divisors is an integer number (728685).

Almost surely, 2^3691966 is an apocalyptic number.

3691966 is a deficient number, since it is larger than the sum of its proper divisors (2137514).

3691966 is a wasteful number, since it uses less digits than its factorization.

3691966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97178.

The product of its digits is 52488, while the sum is 40.

The square root of 3691966 is about 1921.4489324466. The cubic root of 3691966 is about 154.5560100371.

The spelling of 3691966 in words is "three million, six hundred ninety-one thousand, nine hundred sixty-six".