768382557 has 4 divisors (see below), whose sum is σ = 1024510080. Its totient is φ = 512255036.

The previous prime is 768382501. The next prime is 768382561. The reversal of 768382557 is 755283867.

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 a cyclic number.

It is not a de Polignac number, because 768382557 - 2¹⁴ = 768366173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768382567) 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, 128063757 + ... + 128063762.

It is an arithmetic number, because the mean of its divisors is an integer number (256127520).

Almost surely, 2^768382557 is an apocalyptic number.

It is an amenable number.

768382557 is a deficient number, since it is larger than the sum of its proper divisors (256127523).

768382557 is a wasteful number, since it uses less digits than its factorization.

768382557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256127522.

The product of its digits is 2822400, while the sum is 51.

The square root of 768382557 is about 27719.7142301287. The cubic root of 768382557 is about 915.9234238185.

The spelling of 768382557 in words is "seven hundred sixty-eight million, three hundred eighty-two thousand, five hundred fifty-seven".