690630083849 has 2 divisors, whose sum is σ = 690630083850. Its totient is φ = 690630083848.

The previous prime is 690630083791. The next prime is 690630083851. The reversal of 690630083849 is 948380036096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 687063605449 + 3566478400 = 828893^2 + 59720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-690630083849 is a prime.

Together with 690630083851, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 690630083794 and 690630083803.

It is not a weakly prime, because it can be changed into another prime (690630080849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345315041924 + 345315041925.

It is an arithmetic number, because the mean of its divisors is an integer number (345315041925).

Almost surely, 2^690630083849 is an apocalyptic number.

It is an amenable number.

690630083849 is a deficient number, since it is larger than the sum of its proper divisors (1).

690630083849 is an equidigital number, since it uses as much as digits as its factorization.

690630083849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6718464, while the sum is 56.

The spelling of 690630083849 in words is "six hundred ninety billion, six hundred thirty million, eighty-three thousand, eight hundred forty-nine".