691384322 has 8 divisors (see below), whose sum is σ = 1098081036. Its totient is φ = 325357312.

The previous prime is 691384321. The next prime is 691384349. The reversal of 691384322 is 223483196.

It can be written as a sum of positive squares in 2 ways, for example, as 523448641 + 167935681 = 22879^2 + 12959^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (691384321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10167383 + ... + 10167450.

Almost surely, 2^691384322 is an apocalyptic number.

691384322 is a deficient number, since it is larger than the sum of its proper divisors (406696714).

691384322 is a wasteful number, since it uses less digits than its factorization.

691384322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20334852.

The product of its digits is 62208, while the sum is 38.

The square root of 691384322 is about 26294.1879889834. The cubic root of 691384322 is about 884.2461462133.

The spelling of 691384322 in words is "six hundred ninety-one million, three hundred eighty-four thousand, three hundred twenty-two".