691080196 has 24 divisors (see below), whose sum is σ = 1230861240. Its totient is φ = 339443712.

The previous prime is 691080193. The next prime is 691080199.

691080196 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (691080193) and next prime (691080199).

It can be written as a sum of positive squares in 4 ways, for example, as 197796096 + 493284100 = 14064^2 + 22210^2 .

It is not an unprimeable number, because it can be changed into a prime (691080193) 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, 70440 + ... + 79648.

It is an arithmetic number, because the mean of its divisors is an integer number (51285885).

Almost surely, 2^691080196 is an apocalyptic number.

It is an amenable number.

691080196 is a deficient number, since it is larger than the sum of its proper divisors (539781044).

691080196 is a wasteful number, since it uses less digits than its factorization.

691080196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9543 (or 9541 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 691080196 is about 26288.4042117432. The cubic root of 691080196 is about 884.1164731908.

The spelling of 691080196 in words is "six hundred ninety-one million, eighty thousand, one hundred ninety-six".