3725664 has 36 divisors (see below), whose sum is σ = 9829764. Its totient is φ = 1235584.

The previous prime is 3725663. The next prime is 3725677. The reversal of 3725664 is 4665273.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3725663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18814 + ... + 19010.

It is an arithmetic number, because the mean of its divisors is an integer number (273049).

Almost surely, 2^3725664 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 3725664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4914882).

3725664 is an abundant number, since it is smaller than the sum of its proper divisors (6104100).

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

3725664 is an equidigital number, since it uses as much as digits as its factorization.

3725664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 202 counting only the distinct ones).

The product of its digits is 30240, while the sum is 33.

The square root of 3725664 is about 1930.1979173131. The cubic root of 3725664 is about 155.0248173929.

The spelling of 3725664 in words is "three million, seven hundred twenty-five thousand, six hundred sixty-four".