76776766 has 32 divisors (see below), whose sum is σ = 128446560. Its totient is φ = 34128000.

The previous prime is 76776757. The next prime is 76776769. The reversal of 76776766 is 66767767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76776769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242040 + ... + 242356.

It is an arithmetic number, because the mean of its divisors is an integer number (4013955).

Almost surely, 2^76776766 is an apocalyptic number.

76776766 is a deficient number, since it is larger than the sum of its proper divisors (51669794).

76776766 is a wasteful number, since it uses less digits than its factorization.

76776766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540.

The product of its digits is 3111696, while the sum is 52.

The square root of 76776766 is about 8762.2352171121. The cubic root of 76776766 is about 425.0205590977.

The spelling of 76776766 in words is "seventy-six million, seven hundred seventy-six thousand, seven hundred sixty-six".