691792349 has 2 divisors, whose sum is σ = 691792350. Its totient is φ = 691792348.

The previous prime is 691792331. The next prime is 691792357. The reversal of 691792349 is 943297196.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 620508100 + 71284249 = 24910^2 + 8443^2 .

It is a cyclic number.

It is not a de Polignac number, because 691792349 - 2¹⁶ = 691726813 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 691792297 and 691792306.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (691792319) by changing a digit.

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 as a sum of consecutive naturals, namely, 345896174 + 345896175.

It is an arithmetic number, because the mean of its divisors is an integer number (345896175).

Almost surely, 2^691792349 is an apocalyptic number.

It is an amenable number.

691792349 is a deficient number, since it is larger than the sum of its proper divisors (1).

691792349 is an equidigital number, since it uses as much as digits as its factorization.

691792349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 50.

The square root of 691792349 is about 26301.9457265047. The cubic root of 691792349 is about 884.4200607489.

The spelling of 691792349 in words is "six hundred ninety-one million, seven hundred ninety-two thousand, three hundred forty-nine".