768438877 has 4 divisors (see below), whose sum is σ = 770273280. Its totient is φ = 766604476.

The previous prime is 768438859. The next prime is 768438883. The reversal of 768438877 is 778834867.

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 768438877 - 2¹¹ = 768436829 is a prime.

It is a super-2 number, since 2×768438877² = 1180996615370042258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768438857) 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, 916573 + ... + 917410.

It is an arithmetic number, because the mean of its divisors is an integer number (192568320).

Almost surely, 2^768438877 is an apocalyptic number.

It is an amenable number.

768438877 is a deficient number, since it is larger than the sum of its proper divisors (1834403).

768438877 is a wasteful number, since it uses less digits than its factorization.

768438877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834402.

The product of its digits is 12644352, while the sum is 58.

The square root of 768438877 is about 27720.7300950029. The cubic root of 768438877 is about 915.9458013640.

The spelling of 768438877 in words is "seven hundred sixty-eight million, four hundred thirty-eight thousand, eight hundred seventy-seven".