3640926 has 16 divisors (see below), whose sum is σ = 7315200. Its totient is φ = 1208088.

The previous prime is 3640909. The next prime is 3640933. The reversal of 3640926 is 6290463.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3640893 and 3640902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165 + ... + 2703.

It is an arithmetic number, because the mean of its divisors is an integer number (457200).

Almost surely, 2^3640926 is an apocalyptic number.

3640926 is an abundant number, since it is smaller than the sum of its proper divisors (3674274).

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

3640926 is a wasteful number, since it uses less digits than its factorization.

3640926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 3640926 is about 1908.1210653415. The cubic root of 3640926 is about 153.8404768546.

The spelling of 3640926 in words is "three million, six hundred forty thousand, nine hundred twenty-six".