776673387 has 16 divisors (see below), whose sum is σ = 1315002880. Its totient is φ = 443813256.

The previous prime is 776673371. The next prime is 776673397. The reversal of 776673387 is 783376677.

776673387 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 776673387 - 2⁴ = 776673371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (776673307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2054503 + ... + 2054880.

It is an arithmetic number, because the mean of its divisors is an integer number (82187680).

Almost surely, 2^776673387 is an apocalyptic number.

776673387 is a deficient number, since it is larger than the sum of its proper divisors (538329493).

776673387 is a wasteful number, since it uses less digits than its factorization.

776673387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4109399 (or 4109393 counting only the distinct ones).

The product of its digits is 6223392, while the sum is 54.

The square root of 776673387 is about 27868.8605256835. The cubic root of 776673387 is about 919.2059101700.

The spelling of 776673387 in words is "seven hundred seventy-six million, six hundred seventy-three thousand, three hundred eighty-seven".