3703640 has 32 divisors (see below), whose sum is σ = 8495280. Its totient is φ = 1452672.

The previous prime is 3703639. The next prime is 3703643. The reversal of 3703640 is 463073.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3703643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1247 + ... + 2993.

Almost surely, 2^3703640 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 3703640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4247640).

3703640 is an abundant number, since it is smaller than the sum of its proper divisors (4791640).

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

3703640 is a wasteful number, since it uses less digits than its factorization.

3703640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811 (or 1807 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 3703640 is about 1924.4843465199. The cubic root of 3703640 is about 154.7187407228.

The spelling of 3703640 in words is "three million, seven hundred three thousand, six hundred forty".