3640267 has 8 divisors (see below), whose sum is σ = 3926160. Its totient is φ = 3363840.

The previous prime is 3640249. The next prime is 3640289. The reversal of 3640267 is 7620463.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3640267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3640207) 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, 1558 + ... + 3115.

It is an arithmetic number, because the mean of its divisors is an integer number (490770).

Almost surely, 2^3640267 is an apocalyptic number.

3640267 is the 1558-th pentagonal number.

3640267 is a deficient number, since it is larger than the sum of its proper divisors (285893).

3640267 is a wasteful number, since it uses less digits than its factorization.

3640267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4733.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 3640267 is about 1907.9483745636. The cubic root of 3640267 is about 153.8311946929.

The spelling of 3640267 in words is "three million, six hundred forty thousand, two hundred sixty-seven".