6776431487 has 16 divisors (see below), whose sum is σ = 7876403712. Its totient is φ = 5709913440.

The previous prime is 6776431483. The next prime is 6776431507. The reversal of 6776431487 is 7841346776.

It is not a de Polignac number, because 6776431487 - 2² = 6776431483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6776431483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152813 + ... + 192105.

It is an arithmetic number, because the mean of its divisors is an integer number (492275232).

Almost surely, 2^6776431487 is an apocalyptic number.

6776431487 is a deficient number, since it is larger than the sum of its proper divisors (1099972225).

6776431487 is a wasteful number, since it uses less digits than its factorization.

6776431487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39718.

The product of its digits is 4741632, while the sum is 53.

The square root of 6776431487 is about 82319.0833707470. The cubic root of 6776431487 is about 1892.3451462484.

The spelling of 6776431487 in words is "six billion, seven hundred seventy-six million, four hundred thirty-one thousand, four hundred eighty-seven".