3664240 has 40 divisors (see below), whose sum is σ = 8602128. Its totient is φ = 1451520.

The previous prime is 3664189. The next prime is 3664247. The reversal of 3664240 is 424663.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3664247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12900 + ... + 13180.

Almost surely, 2^3664240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3664240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4301064).

3664240 is an abundant number, since it is smaller than the sum of its proper divisors (4937888).

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

3664240 is a wasteful number, since it uses less digits than its factorization.

3664240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 3664240 is about 1914.2204679712. The cubic root of 3664240 is about 154.1681415328.

The spelling of 3664240 in words is "three million, six hundred sixty-four thousand, two hundred forty".