691343196 has 24 divisors (see below), whose sum is σ = 1698036480. Its totient is φ = 218318832.

The previous prime is 691343171. The next prime is 691343197.

691343196 is nontrivially palindromic in base 10.

691343196 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (691343197) 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, 1515876 + ... + 1516331.

It is an arithmetic number, because the mean of its divisors is an integer number (70751520).

Almost surely, 2^691343196 is an apocalyptic number.

It is an amenable number.

691343196 is an abundant number, since it is smaller than the sum of its proper divisors (1006693284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

691343196 is a wasteful number, since it uses less digits than its factorization.

691343196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3032233 (or 3032231 counting only the distinct ones).

The product of its digits is 104976, while the sum is 42.

The square root of 691343196 is about 26293.4059414143. The cubic root of 691343196 is about 884.2286131631.

The spelling of 691343196 in words is "six hundred ninety-one million, three hundred forty-three thousand, one hundred ninety-six".