691793694 has 12 divisors (see below), whose sum is σ = 1498886376. Its totient is φ = 230597892.

The previous prime is 691793689. The next prime is 691793807. The reversal of 691793694 is 496397196.

It is a self number, because there is not a number n which added to its sum of digits gives 691793694.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19216474 + ... + 19216509.

It is an arithmetic number, because the mean of its divisors is an integer number (124907198).

Almost surely, 2^691793694 is an apocalyptic number.

691793694 is an abundant number, since it is smaller than the sum of its proper divisors (807092682).

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

691793694 is a wasteful number, since it uses less digits than its factorization.

691793694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38432991 (or 38432988 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 691793694 is about 26301.9712949429. The cubic root of 691793694 is about 884.4206339191.

The spelling of 691793694 in words is "six hundred ninety-one million, seven hundred ninety-three thousand, six hundred ninety-four".