774320616931 has 4 divisors (see below), whose sum is σ = 774340458112. Its totient is φ = 774300775752.

The previous prime is 774320616929. The next prime is 774320616943. The reversal of 774320616931 is 139616023477.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 774320616931 - 2¹ = 774320616929 is a prime.

It is a super-2 number, since 2×774320616931² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (774320616961) 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, 9861936 + ... + 9940141.

It is an arithmetic number, because the mean of its divisors is an integer number (193585114528).

Almost surely, 2^774320616931 is an apocalyptic number.

774320616931 is a deficient number, since it is larger than the sum of its proper divisors (19841181).

774320616931 is a wasteful number, since it uses less digits than its factorization.

774320616931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19841180.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 774320616931 in words is "seven hundred seventy-four billion, three hundred twenty million, six hundred sixteen thousand, nine hundred thirty-one".