326861 has 4 divisors (see below), whose sum is σ = 328224. Its totient is φ = 325500.

The previous prime is 326831. The next prime is 326863. The reversal of 326861 is 168623.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 326861 - 2¹⁸ = 64717 is a prime.

It is a super-2 number, since 2×326861² = 213676226642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 326861.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 326861.

It is not an unprimeable number, because it can be changed into a prime (326863) 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, 215 + ... + 836.

It is an arithmetic number, because the mean of its divisors is an integer number (82056).

2³²⁶⁸⁶¹ is an apocalyptic number.

It is an amenable number.

326861 is a deficient number, since it is larger than the sum of its proper divisors (1363).

326861 is a wasteful number, since it uses less digits than its factorization.

326861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362.

The product of its digits is 1728, while the sum is 26.

The square root of 326861 is about 571.7175876252. The cubic root of 326861 is about 68.8844245960.

The spelling of 326861 in words is "three hundred twenty-six thousand, eight hundred sixty-one".