768827757 has 4 divisors (see below), whose sum is σ = 1025103680. Its totient is φ = 512551836.

The previous prime is 768827711. The next prime is 768827767. The reversal of 768827757 is 757728867.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 768827757 - 2⁷ = 768827629 is a prime.

It is a super-2 number, since 2×768827757² = 1182192239867302098, 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 = 768827697 and 768827706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768827707) 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 3 ways as a sum of consecutive naturals, for example, 128137957 + ... + 128137962.

It is an arithmetic number, because the mean of its divisors is an integer number (256275920).

Almost surely, 2^768827757 is an apocalyptic number.

It is an amenable number.

768827757 is a deficient number, since it is larger than the sum of its proper divisors (256275923).

768827757 is a wasteful number, since it uses less digits than its factorization.

768827757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256275922.

The product of its digits is 9219840, while the sum is 57.

The square root of 768827757 is about 27727.7434530832. The cubic root of 768827757 is about 916.1002846700.

The spelling of 768827757 in words is "seven hundred sixty-eight million, eight hundred twenty-seven thousand, seven hundred fifty-seven".