3691812 has 12 divisors (see below), whose sum is σ = 8614256. Its totient is φ = 1230600.

The previous prime is 3691811. The next prime is 3691813. The reversal of 3691812 is 2181963.

It is an interprime number because it is at equal distance from previous prime (3691811) and next prime (3691813).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 3691812.

It is not an unprimeable number, because it can be changed into a prime (3691811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153814 + ... + 153837.

Almost surely, 2^3691812 is an apocalyptic number.

It is an amenable number.

3691812 is an abundant number, since it is smaller than the sum of its proper divisors (4922444).

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

3691812 is a wasteful number, since it uses less digits than its factorization.

3691812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307658 (or 307656 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 3691812 is about 1921.4088581039. The cubic root of 3691812 is about 154.5538610505.

The spelling of 3691812 in words is "three million, six hundred ninety-one thousand, eight hundred twelve".