691699113 has 24 divisors (see below), whose sum is σ = 1142551488. Its totient is φ = 395014752.

The previous prime is 691699109. The next prime is 691699117. The reversal of 691699113 is 311996196.

It is an interprime number because it is at equal distance from previous prime (691699109) and next prime (691699117).

It is not a de Polignac number, because 691699113 - 2² = 691699109 is a prime.

It is not an unprimeable number, because it can be changed into a prime (691699117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174631 + ... + 178547.

It is an arithmetic number, because the mean of its divisors is an integer number (47606312).

Almost surely, 2^691699113 is an apocalyptic number.

691699113 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

691699113 is a deficient number, since it is larger than the sum of its proper divisors (450852375).

691699113 is a wasteful number, since it uses less digits than its factorization.

691699113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6733 (or 6730 counting only the distinct ones).

The product of its digits is 78732, while the sum is 45.

The square root of 691699113 is about 26300.1732503799. The cubic root of 691699113 is about 884.3803265263.

The spelling of 691699113 in words is "six hundred ninety-one million, six hundred ninety-nine thousand, one hundred thirteen".