88666779 has 4 divisors (see below), whose sum is σ = 118222376. Its totient is φ = 59111184.

The previous prime is 88666777. The next prime is 88666783. The reversal of 88666779 is 97766688.

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

It is not a de Polignac number, because 88666779 - 2¹ = 88666777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (88666777) 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, 14777794 + ... + 14777799.

It is an arithmetic number, because the mean of its divisors is an integer number (29555594).

Almost surely, 2^88666779 is an apocalyptic number.

88666779 is a deficient number, since it is larger than the sum of its proper divisors (29555597).

88666779 is a wasteful number, since it uses less digits than its factorization.

88666779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29555596.

The product of its digits is 6096384, while the sum is 57.

The square root of 88666779 is about 9416.3038927171. The cubic root of 88666779 is about 445.9166041528.

Subtracting 88666779 from its reverse (97766688), we obtain a palindrome (9099909).

The spelling of 88666779 in words is "eighty-eight million, six hundred sixty-six thousand, seven hundred seventy-nine".