3640263 has 8 divisors (see below), whose sum is σ = 5294976. Its totient is φ = 2206200.

The previous prime is 3640249. The next prime is 3640289. The reversal of 3640263 is 3620463.

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

It is not a de Polignac number, because 3640263 - 2²¹ = 1543111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3640223) 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, 55123 + ... + 55188.

It is an arithmetic number, because the mean of its divisors is an integer number (661872).

Almost surely, 2^3640263 is an apocalyptic number.

3640263 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

3640263 is a deficient number, since it is larger than the sum of its proper divisors (1654713).

3640263 is a wasteful number, since it uses less digits than its factorization.

3640263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110325.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 3640263 is about 1907.9473263170. The cubic root of 3640263 is about 153.8311383486.

The spelling of 3640263 in words is "three million, six hundred forty thousand, two hundred sixty-three".