771696493 has 2 divisors, whose sum is σ = 771696494. Its totient is φ = 771696492.

The previous prime is 771696491. The next prime is 771696511. The reversal of 771696493 is 394696177.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 634384969 + 137311524 = 25187^2 + 11718^2 .

It is a cyclic number.

It is not a de Polignac number, because 771696493 - 2¹ = 771696491 is a prime.

Together with 771696491, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 771696493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (771696491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 385848246 + 385848247.

It is an arithmetic number, because the mean of its divisors is an integer number (385848247).

Almost surely, 2^771696493 is an apocalyptic number.

It is an amenable number.

771696493 is a deficient number, since it is larger than the sum of its proper divisors (1).

771696493 is an equidigital number, since it uses as much as digits as its factorization.

771696493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 52.

The square root of 771696493 is about 27779.4257140064. The cubic root of 771696493 is about 917.2382889934.

The spelling of 771696493 in words is "seven hundred seventy-one million, six hundred ninety-six thousand, four hundred ninety-three".