326743973 has 4 divisors (see below), whose sum is σ = 326881248. Its totient is φ = 326606700.

The previous prime is 326743951. The next prime is 326743997. The reversal of 326743973 is 379347623.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 379347623 = 1699 ⋅223277.

It is a cyclic number.

It is not a de Polignac number, because 326743973 - 2⁸ = 326743717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326743903) 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, 65003 + ... + 69848.

It is an arithmetic number, because the mean of its divisors is an integer number (81720312).

Almost surely, 2^326743973 is an apocalyptic number.

It is an amenable number.

326743973 is a deficient number, since it is larger than the sum of its proper divisors (137275).

326743973 is a wasteful number, since it uses less digits than its factorization.

326743973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137274.

The product of its digits is 571536, while the sum is 44.

The square root of 326743973 is about 18076.0607710862. The cubic root of 326743973 is about 688.7620265071.

The spelling of 326743973 in words is "three hundred twenty-six million, seven hundred forty-three thousand, nine hundred seventy-three".