761805863 has 12 divisors (see below), whose sum is σ = 942760368. Its totient is φ = 602746560.

The previous prime is 761805857. The next prime is 761805883. The reversal of 761805863 is 368508167.

761805863 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 761805863 - 2²⁸ = 493370407 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (761805823) 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, 320798 + ... + 323163.

It is an arithmetic number, because the mean of its divisors is an integer number (78563364).

Almost surely, 2^761805863 is an apocalyptic number.

761805863 is a deficient number, since it is larger than the sum of its proper divisors (180954505).

761805863 is a wasteful number, since it uses less digits than its factorization.

761805863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643994 (or 643981 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 761805863 is about 27600.8308389440. The cubic root of 761805863 is about 913.3027603414.

The spelling of 761805863 in words is "seven hundred sixty-one million, eight hundred five thousand, eight hundred sixty-three".