768626461 has 2 divisors, whose sum is σ = 768626462. Its totient is φ = 768626460.

The previous prime is 768626459. The next prime is 768626473. The reversal of 768626461 is 164626867.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 614742436 + 153884025 = 24794^2 + 12405^2 .

It is an emirp because it is prime and its reverse (164626867) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 768626461 - 2¹ = 768626459 is a prime.

Together with 768626459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768626401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384313230 + 384313231.

It is an arithmetic number, because the mean of its divisors is an integer number (384313231).

Almost surely, 2^768626461 is an apocalyptic number.

It is an amenable number.

768626461 is a deficient number, since it is larger than the sum of its proper divisors (1).

768626461 is an equidigital number, since it uses as much as digits as its factorization.

768626461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 46.

The square root of 768626461 is about 27724.1133492128. The cubic root of 768626461 is about 916.0203259634.

The spelling of 768626461 in words is "seven hundred sixty-eight million, six hundred twenty-six thousand, four hundred sixty-one".