328126705 has 4 divisors (see below), whose sum is σ = 393752052. Its totient is φ = 262501360.

The previous prime is 328126699. The next prime is 328126709. The reversal of 328126705 is 507621823.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 248346081 + 79780624 = 15759^2 + 8932^2 .

It is not a de Polignac number, because 328126705 - 2⁷ = 328126577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328126709) 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, 32812666 + ... + 32812675.

It is an arithmetic number, because the mean of its divisors is an integer number (98438013).

Almost surely, 2^328126705 is an apocalyptic number.

It is an amenable number.

328126705 is a deficient number, since it is larger than the sum of its proper divisors (65625347).

328126705 is an equidigital number, since it uses as much as digits as its factorization.

328126705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65625346.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 328126705 is about 18114.2679951468. The cubic root of 328126705 is about 689.7322387512.

The spelling of 328126705 in words is "three hundred twenty-eight million, one hundred twenty-six thousand, seven hundred five".