764888855 has 4 divisors (see below), whose sum is σ = 917866632. Its totient is φ = 611911080.

The previous prime is 764888809. The next prime is 764888863. The reversal of 764888855 is 558888467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 558888467 = 1279 ⋅436973.

It is not a de Polignac number, because 764888855 - 2⁶ = 764888791 is a prime.

It is a super-2 number, since 2×764888855² = 1170109921006422050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 764888794 and 764888803.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 76488881 + ... + 76488890.

It is an arithmetic number, because the mean of its divisors is an integer number (229466658).

Almost surely, 2^764888855 is an apocalyptic number.

764888855 is a deficient number, since it is larger than the sum of its proper divisors (152977777).

764888855 is a wasteful number, since it uses less digits than its factorization.

764888855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152977776.

The product of its digits is 17203200, while the sum is 59.

The square root of 764888855 is about 27656.6240709165. The cubic root of 764888855 is about 914.5331329843.

The spelling of 764888855 in words is "seven hundred sixty-four million, eight hundred eighty-eight thousand, eight hundred fifty-five".