805649946487 has 2 divisors, whose sum is σ = 805649946488. Its totient is φ = 805649946486.

The previous prime is 805649946461. The next prime is 805649946509. The reversal of 805649946487 is 784649946508.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 805649946487 - 2¹⁹ = 805649422199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805649946427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402824973243 + 402824973244.

It is an arithmetic number, because the mean of its divisors is an integer number (402824973244).

Almost surely, 2^805649946487 is an apocalyptic number.

805649946487 is a deficient number, since it is larger than the sum of its proper divisors (1).

805649946487 is an equidigital number, since it uses as much as digits as its factorization.

805649946487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 418037760, while the sum is 70.

The spelling of 805649946487 in words is "eight hundred five billion, six hundred forty-nine million, nine hundred forty-six thousand, four hundred eighty-seven".