326729945 has 4 divisors (see below), whose sum is σ = 392075940. Its totient is φ = 261383952.

The previous prime is 326729939. The next prime is 326729951. The reversal of 326729945 is 549927623.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 549927623 = 7 ⋅78561089.

It is an interprime number because it is at equal distance from previous prime (326729939) and next prime (326729951).

It can be written as a sum of positive squares in 2 ways, for example, as 87965641 + 238764304 = 9379^2 + 15452^2 .

It is a cyclic number.

It is not a de Polignac number, because 326729945 - 2⁴ = 326729929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 326729945.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32672990 + ... + 32672999.

It is an arithmetic number, because the mean of its divisors is an integer number (98018985).

Almost surely, 2^326729945 is an apocalyptic number.

It is an amenable number.

326729945 is a deficient number, since it is larger than the sum of its proper divisors (65345995).

326729945 is an equidigital number, since it uses as much as digits as its factorization.

326729945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65345994.

The product of its digits is 816480, while the sum is 47.

The square root of 326729945 is about 18075.6727399010. The cubic root of 326729945 is about 688.7521695622.

The spelling of 326729945 in words is "three hundred twenty-six million, seven hundred twenty-nine thousand, nine hundred forty-five".