775085863 has 4 divisors (see below), whose sum is σ = 775179288. Its totient is φ = 774992440.

The previous prime is 775085849. The next prime is 775085881. The reversal of 775085863 is 368580577.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368580577 = 73 ⋅5049049.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-775085863 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 (775085803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32908 + ... + 51313.

It is an arithmetic number, because the mean of its divisors is an integer number (193794822).

Almost surely, 2^775085863 is an apocalyptic number.

775085863 is a deficient number, since it is larger than the sum of its proper divisors (93425).

775085863 is an equidigital number, since it uses as much as digits as its factorization.

775085863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93424.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The square root of 775085863 is about 27840.3639164433. The cubic root of 775085863 is about 918.5791959277.

The spelling of 775085863 in words is "seven hundred seventy-five million, eighty-five thousand, eight hundred sixty-three".