788055881 has 4 divisors (see below), whose sum is σ = 788124564. Its totient is φ = 787987200.

The previous prime is 788055871. The next prime is 788055907. The reversal of 788055881 is 188550887.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 267486025 + 520569856 = 16355^2 + 22816^2 .

It is a cyclic number.

It is not a de Polignac number, because 788055881 - 2⁶ = 788055817 is a prime.

It is a super-2 number, since 2×788055881² = 1242064143157372322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (788055811) 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, 12500 + ... + 41621.

It is an arithmetic number, because the mean of its divisors is an integer number (197031141).

Almost surely, 2^788055881 is an apocalyptic number.

It is an amenable number.

788055881 is a deficient number, since it is larger than the sum of its proper divisors (68683).

788055881 is a wasteful number, since it uses less digits than its factorization.

788055881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68682.

The product of its (nonzero) digits is 716800, while the sum is 50.

The square root of 788055881 is about 28072.3330166910. Note that the first 3 decimals coincide. The cubic root of 788055881 is about 923.6746076780.

The spelling of 788055881 in words is "seven hundred eighty-eight million, fifty-five thousand, eight hundred eighty-one".