785495647 has 2 divisors, whose sum is σ = 785495648. Its totient is φ = 785495646.

The previous prime is 785495617. The next prime is 785495651. The reversal of 785495647 is 746594587.

It is a strong prime.

It is an emirp because it is prime and its reverse (746594587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 785495647 - 2¹⁵ = 785462879 is a prime.

It is a super-2 number, since 2×785495647² = 1234006822911897218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (785495617) 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, 392747823 + 392747824.

It is an arithmetic number, because the mean of its divisors is an integer number (392747824).

Almost surely, 2^785495647 is an apocalyptic number.

785495647 is a deficient number, since it is larger than the sum of its proper divisors (1).

785495647 is an equidigital number, since it uses as much as digits as its factorization.

785495647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8467200, while the sum is 55.

The square root of 785495647 is about 28026.6952564872. The cubic root of 785495647 is about 922.6732452244.

The spelling of 785495647 in words is "seven hundred eighty-five million, four hundred ninety-five thousand, six hundred forty-seven".