788666887 has 4 divisors (see below), whose sum is σ = 788836360. Its totient is φ = 788497416.

The previous prime is 788666881. The next prime is 788666891.

788666887 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 788666887 - 2⁷ = 788666759 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 (788666881) 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, 77553 + ... + 87130.

It is an arithmetic number, because the mean of its divisors is an integer number (197209090).

Almost surely, 2^788666887 is an apocalyptic number.

788666887 is a deficient number, since it is larger than the sum of its proper divisors (169473).

788666887 is a wasteful number, since it uses less digits than its factorization.

788666887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169472.

The product of its digits is 43352064, while the sum is 64.

The square root of 788666887 is about 28083.2136159664. The cubic root of 788666887 is about 923.9132645826.

The spelling of 788666887 in words is "seven hundred eighty-eight million, six hundred sixty-six thousand, eight hundred eighty-seven".