3668994 has 48 divisors (see below), whose sum is σ = 9342528. Its totient is φ = 1018656.

The previous prime is 3668989. The next prime is 3668999. The reversal of 3668994 is 4998663.

It is an interprime number because it is at equal distance from previous prime (3668989) and next prime (3668999).

It is not an unprimeable number, because it can be changed into a prime (3668999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4269 + ... + 5055.

It is an arithmetic number, because the mean of its divisors is an integer number (194636).

Almost surely, 2^3668994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3668994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4671264).

3668994 is an abundant number, since it is smaller than the sum of its proper divisors (5673534).

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

3668994 is a wasteful number, since it uses less digits than its factorization.

3668994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 836 counting only the distinct ones).

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

The square root of 3668994 is about 1915.4618242085. The cubic root of 3668994 is about 154.2347855127.

The spelling of 3668994 in words is "three million, six hundred sixty-eight thousand, nine hundred ninety-four".