764871543 has 12 divisors (see below), whose sum is σ = 1162962840. Its totient is φ = 483076656.

The previous prime is 764871539. The next prime is 764871553. The reversal of 764871543 is 345178467.

It is not a de Polignac number, because 764871543 - 2² = 764871539 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764871553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2236296 + ... + 2236637.

It is an arithmetic number, because the mean of its divisors is an integer number (96913570).

Almost surely, 2^764871543 is an apocalyptic number.

764871543 is a deficient number, since it is larger than the sum of its proper divisors (398091297).

764871543 is a wasteful number, since it uses less digits than its factorization.

764871543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4472958 (or 4472955 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 764871543 is about 27656.3110880681. The cubic root of 764871543 is about 914.5262332816.

The spelling of 764871543 in words is "seven hundred sixty-four million, eight hundred seventy-one thousand, five hundred forty-three".