3640265 has 8 divisors (see below), whose sum is σ = 4380480. Its totient is φ = 2904112.

The previous prime is 3640249. The next prime is 3640289. The reversal of 3640265 is 5620463.

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

It is a cyclic number.

It is not a de Polignac number, because 3640265 - 2⁴ = 3640249 is a prime.

It is a Curzon number.

It is an unprimeable number.

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, 1556 + ... + 3114.

It is an arithmetic number, because the mean of its divisors is an integer number (547560).

Almost surely, 2^3640265 is an apocalyptic number.

It is an amenable number.

3640265 is a deficient number, since it is larger than the sum of its proper divisors (740215).

3640265 is a wasteful number, since it uses less digits than its factorization.

3640265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 3640265 is about 1907.9478504404. The cubic root of 3640265 is about 153.8311665208.

The spelling of 3640265 in words is "three million, six hundred forty thousand, two hundred sixty-five".