321740674 has 16 divisors (see below), whose sum is σ = 528622200. Its totient is φ = 146185984.

The previous prime is 321740611. The next prime is 321740677. The reversal of 321740674 is 476047123.

It can be written as a sum of positive squares in 4 ways, for example, as 225210049 + 96530625 = 15007^2 + 9825^2 .

It is a super-2 number, since 2×321740674² = 207034122611948552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (321740677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162169 + ... + 164140.

Almost surely, 2^321740674 is an apocalyptic number.

321740674 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

321740674 is a deficient number, since it is larger than the sum of its proper divisors (206881526).

321740674 is a wasteful number, since it uses less digits than its factorization.

321740674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326357.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 321740674 is about 17937.1311530021. The cubic root of 321740674 is about 685.2283494651.

Adding to 321740674 its reverse (476047123), we get a palindrome (797787797).

The spelling of 321740674 in words is "three hundred twenty-one million, seven hundred forty thousand, six hundred seventy-four".