667882688871 has 32 divisors (see below), whose sum is σ = 954614389248. Its totient is φ = 414267384960.

The previous prime is 667882688831. The next prime is 667882688887. The reversal of 667882688871 is 178886288766.

It is not a de Polignac number, because 667882688871 - 2²² = 667878494567 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 667882688793 and 667882688802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667882688801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9387685 + ... + 9458561.

It is an arithmetic number, because the mean of its divisors is an integer number (29831699664).

Almost surely, 2^667882688871 is an apocalyptic number.

667882688871 is a deficient number, since it is larger than the sum of its proper divisors (286731700377).

667882688871 is a wasteful number, since it uses less digits than its factorization.

667882688871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74631.

The product of its digits is 693633024, while the sum is 75.

The spelling of 667882688871 in words is "six hundred sixty-seven billion, eight hundred eighty-two million, six hundred eighty-eight thousand, eight hundred seventy-one".