326256647 has 4 divisors (see below), whose sum is σ = 326292936. Its totient is φ = 326220360.

The previous prime is 326256613. The next prime is 326256659. The reversal of 326256647 is 746652623.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 326256647 - 2¹⁸ = 325994503 is a prime.

It is a Duffinian number.

326256647 is a Rhonda number in base 10.

Its product of digits (362880) is a multiple of the sum of its prime divisors (36288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326256247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6497 + ... + 26357.

It is an arithmetic number, because the mean of its divisors is an integer number (81573234).

Almost surely, 2^326256647 is an apocalyptic number.

326256647 is a deficient number, since it is larger than the sum of its proper divisors (36289).

326256647 is a wasteful number, since it uses less digits than its factorization.

326256647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36288.

The product of its digits is 362880, while the sum is 41.

The square root of 326256647 is about 18062.5758683528. The cubic root of 326256647 is about 688.4194354878.

The spelling of 326256647 in words is "three hundred twenty-six million, two hundred fifty-six thousand, six hundred forty-seven".