321673465 has 4 divisors (see below), whose sum is σ = 386008164. Its totient is φ = 257338768.

The previous prime is 321673441. The next prime is 321673493. The reversal of 321673465 is 564376123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564376123 = 59 ⋅9565697.

It can be written as a sum of positive squares in 2 ways, for example, as 135187129 + 186486336 = 11627^2 + 13656^2 .

It is a cyclic number.

It is not a de Polignac number, because 321673465 - 2¹⁹ = 321149177 is a prime.

It is a Duffinian number.

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, 32167342 + ... + 32167351.

It is an arithmetic number, because the mean of its divisors is an integer number (96502041).

Almost surely, 2^321673465 is an apocalyptic number.

It is an amenable number.

321673465 is a deficient number, since it is larger than the sum of its proper divisors (64334699).

321673465 is an equidigital number, since it uses as much as digits as its factorization.

321673465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64334698.

The product of its digits is 90720, while the sum is 37.

The square root of 321673465 is about 17935.2575950277. The cubic root of 321673465 is about 685.1806332732.

The spelling of 321673465 in words is "three hundred twenty-one million, six hundred seventy-three thousand, four hundred sixty-five".