691113742 has 16 divisors (see below), whose sum is σ = 1131316992. Its totient is φ = 314030520.

The previous prime is 691113739. The next prime is 691113743. The reversal of 691113742 is 247311196.

It is a junction number, because it is equal to n+sod(n) for n = 691113698 and 691113707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (691113743) 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, 119563 + ... + 125209.

It is an arithmetic number, because the mean of its divisors is an integer number (70707312).

Almost surely, 2^691113742 is an apocalyptic number.

691113742 is a deficient number, since it is larger than the sum of its proper divisors (440203250).

691113742 is a wasteful number, since it uses less digits than its factorization.

691113742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11223.

The product of its digits is 9072, while the sum is 34.

The square root of 691113742 is about 26289.0422419684. The cubic root of 691113742 is about 884.1307783764.

The spelling of 691113742 in words is "six hundred ninety-one million, one hundred thirteen thousand, seven hundred forty-two".