785608013 has 8 divisors (see below), whose sum is σ = 812261400. Its totient is φ = 759240000.

The previous prime is 785608007. The next prime is 785608037. The reversal of 785608013 is 310806587.

It can be written as a sum of positive squares in 4 ways, for example, as 75811849 + 709796164 = 8707^2 + 26642^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 785608013 - 2²⁶ = 718499149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785608513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65738 + ... + 76763.

It is an arithmetic number, because the mean of its divisors is an integer number (101532675).

Almost surely, 2^785608013 is an apocalyptic number.

It is an amenable number.

785608013 is a deficient number, since it is larger than the sum of its proper divisors (26653387).

785608013 is a wasteful number, since it uses less digits than its factorization.

785608013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142687.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 785608013 is about 28028.6998093026. The cubic root of 785608013 is about 922.7172395945.

The spelling of 785608013 in words is "seven hundred eighty-five million, six hundred eight thousand, thirteen".