3331638 has 32 divisors (see below), whose sum is σ = 7488000. Its totient is φ = 1097928.

The previous prime is 3331621. The next prime is 3331639. The reversal of 3331638 is 8361333.

It is a super-2 number, since 2×3331638² = 22199623526088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3331639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5263 + ... + 5861.

It is an arithmetic number, because the mean of its divisors is an integer number (234000).

Almost surely, 2^3331638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3331638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3744000).

3331638 is an abundant number, since it is smaller than the sum of its proper divisors (4156362).

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

3331638 is a wasteful number, since it uses less digits than its factorization.

3331638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713 (or 707 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 3331638 is about 1825.2775131470. The cubic root of 3331638 is about 149.3548290078.

It can be divided in two parts, 3331 and 638, that added together give a square (3969 = 63²).

The spelling of 3331638 in words is "three million, three hundred thirty-one thousand, six hundred thirty-eight".