3440664 has 64 divisors (see below), whose sum is σ = 10130400. Its totient is φ = 1078272.

The previous prime is 3440663. The next prime is 3440683. The reversal of 3440664 is 4660443.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440663) 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, 3204 + ... + 4140.

Almost surely, 2^3440664 is an apocalyptic number.

3440664 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3440664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5065200).

3440664 is an abundant number, since it is smaller than the sum of its proper divisors (6689736).

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

3440664 is a wasteful number, since it uses less digits than its factorization.

3440664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 959 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 3440664 is about 1854.9026928656. The cubic root of 3440664 is about 150.9665583882.

The spelling of 3440664 in words is "three million, four hundred forty thousand, six hundred sixty-four".