776669427 has 12 divisors (see below), whose sum is σ = 1138600840. Its totient is φ = 510051168.

The previous prime is 776669419. The next prime is 776669449. The reversal of 776669427 is 724966677.

It is a happy number.

776669427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 776669427 - 2³ = 776669419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (776669527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 643402 + ... + 644607.

Almost surely, 2^776669427 is an apocalyptic number.

776669427 is a deficient number, since it is larger than the sum of its proper divisors (361931413).

776669427 is a wasteful number, since it uses less digits than its factorization.

776669427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288082 (or 1288079 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 54.

The square root of 776669427 is about 27868.7894785547. The cubic root of 776669427 is about 919.2043479253.

The spelling of 776669427 in words is "seven hundred seventy-six million, six hundred sixty-nine thousand, four hundred twenty-seven".