3686994 has 24 divisors (see below), whose sum is σ = 8459100. Its totient is φ = 1156608.

The previous prime is 3686989. The next prime is 3686999. The reversal of 3686994 is 4996863.

It is an interprime number because it is at equal distance from previous prime (3686989) and next prime (3686999).

It can be written as a sum of positive squares in 2 ways, for example, as 3470769 + 216225 = 1863^2 + 465^2 .

It is not an unprimeable number, because it can be changed into a prime (3686999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5719 + ... + 6330.

Almost surely, 2^3686994 is an apocalyptic number.

3686994 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

3686994 is an abundant number, since it is smaller than the sum of its proper divisors (4772106).

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

3686994 is a wasteful number, since it uses less digits than its factorization.

3686994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12074 (or 12071 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 3686994 is about 1920.1546812692. The cubic root of 3686994 is about 154.4865982657.

It can be divided in two parts, 36869 and 94, that added together give a palindrome (36963).

The spelling of 3686994 in words is "three million, six hundred eighty-six thousand, nine hundred ninety-four".