785494649 has 6 divisors (see below), whose sum is σ = 787873950. Its totient is φ = 783122496.

The previous prime is 785494627. The next prime is 785494663. The reversal of 785494649 is 946494587.

It can be written as a sum of positive squares in 3 ways, for example, as 513475600 + 272019049 = 22660^2 + 16493^2 .

It is not a de Polignac number, because 785494649 - 2¹² = 785490553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 785494594 and 785494603.

It is not an unprimeable number, because it can be changed into a prime (785494849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118577 + ... + 125025.

It is an arithmetic number, because the mean of its divisors is an integer number (131312325).

Almost surely, 2^785494649 is an apocalyptic number.

It is an amenable number.

785494649 is a deficient number, since it is larger than the sum of its proper divisors (2379301).

785494649 is an frugal number, since it uses more digits than its factorization.

785494649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7147 (or 6798 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 56.

The square root of 785494649 is about 28026.6774520277. The cubic root of 785494649 is about 922.6728544613.

The spelling of 785494649 in words is "seven hundred eighty-five million, four hundred ninety-four thousand, six hundred forty-nine".