805649683 has 2 divisors, whose sum is σ = 805649684. Its totient is φ = 805649682.

The previous prime is 805649657. The next prime is 805649687. The reversal of 805649683 is 386946508.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-805649683 is a prime.

It is not a weakly prime, because it can be changed into another prime (805649687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402824841 + 402824842.

It is an arithmetic number, because the mean of its divisors is an integer number (402824842).

Almost surely, 2^805649683 is an apocalyptic number.

805649683 is a deficient number, since it is larger than the sum of its proper divisors (1).

805649683 is an equidigital number, since it uses as much as digits as its factorization.

805649683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The square root of 805649683 is about 28383.9687675984. The cubic root of 805649683 is about 930.4979346849.

The spelling of 805649683 in words is "eight hundred five million, six hundred forty-nine thousand, six hundred eighty-three".