774688013 has 4 divisors (see below), whose sum is σ = 845114208. Its totient is φ = 704261820.

The previous prime is 774687973. The next prime is 774688027. The reversal of 774688013 is 310886477.

774688013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-774688013 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 (774688073) 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, 35213081 + ... + 35213102.

It is an arithmetic number, because the mean of its divisors is an integer number (211278552).

Almost surely, 2^774688013 is an apocalyptic number.

It is an amenable number.

774688013 is a deficient number, since it is larger than the sum of its proper divisors (70426195).

774688013 is a wasteful number, since it uses less digits than its factorization.

774688013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70426194.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 774688013 is about 27833.2177981634. The cubic root of 774688013 is about 918.4220007499.

It can be divided in two parts, 7746 and 88013, that added together give a palindrome (95759).

The spelling of 774688013 in words is "seven hundred seventy-four million, six hundred eighty-eight thousand, thirteen".