766671855 has 16 divisors (see below), whose sum is σ = 1228352640. Its totient is φ = 408332448.

The previous prime is 766671839. The next prime is 766671877. The reversal of 766671855 is 558176667.

It is not a de Polignac number, because 766671855 - 2⁴ = 766671839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 766671798 and 766671807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23497 + ... + 45666.

It is an arithmetic number, because the mean of its divisors is an integer number (76772040).

Almost surely, 2^766671855 is an apocalyptic number.

766671855 is a deficient number, since it is larger than the sum of its proper divisors (461680785).

766671855 is a wasteful number, since it uses less digits than its factorization.

766671855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69910.

The product of its digits is 2116800, while the sum is 51.

The square root of 766671855 is about 27688.8398998586. The cubic root of 766671855 is about 915.2431913527.

The spelling of 766671855 in words is "seven hundred sixty-six million, six hundred seventy-one thousand, eight hundred fifty-five".