3640255 has 8 divisors (see below), whose sum is σ = 4384224. Its totient is φ = 2901600.

The previous prime is 3640249. The next prime is 3640289. The reversal of 3640255 is 5520463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3640255 - 2⁵ = 3640223 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

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, 385 + ... + 2725.

It is an arithmetic number, because the mean of its divisors is an integer number (548028).

Almost surely, 2^3640255 is an apocalyptic number.

3640255 is a deficient number, since it is larger than the sum of its proper divisors (743969).

3640255 is a wasteful number, since it uses less digits than its factorization.

3640255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 3640255 is about 1907.9452298219. The cubic root of 3640255 is about 153.8310256599.

The spelling of 3640255 in words is "three million, six hundred forty thousand, two hundred fifty-five".