785306649 has 4 divisors (see below), whose sum is σ = 1047075536. Its totient is φ = 523537764.

The previous prime is 785306629. The next prime is 785306677. The reversal of 785306649 is 946603587.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 785306649 - 2⁷ = 785306521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 785306598 and 785306607.

It is not an unprimeable number, because it can be changed into a prime (785306629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130884439 + ... + 130884444.

It is an arithmetic number, because the mean of its divisors is an integer number (261768884).

Almost surely, 2^785306649 is an apocalyptic number.

It is an amenable number.

785306649 is a deficient number, since it is larger than the sum of its proper divisors (261768887).

785306649 is a wasteful number, since it uses less digits than its factorization.

785306649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261768886.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 785306649 is about 28023.3233039909. The cubic root of 785306649 is about 922.5992378608.

The spelling of 785306649 in words is "seven hundred eighty-five million, three hundred six thousand, six hundred forty-nine".