868710669 has 4 divisors (see below), whose sum is σ = 1158280896. Its totient is φ = 579140444.

The previous prime is 868710643. The next prime is 868710671. The reversal of 868710669 is 966017868.

It is a happy number.

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 868710669 - 2⁸ = 868710413 is a prime.

It is a super-2 number, since 2×868710669² = 1509316452868855122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868715669) 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, 144785109 + ... + 144785114.

It is an arithmetic number, because the mean of its divisors is an integer number (289570224).

Almost surely, 2^868710669 is an apocalyptic number.

It is an amenable number.

868710669 is a deficient number, since it is larger than the sum of its proper divisors (289570227).

868710669 is a wasteful number, since it uses less digits than its factorization.

868710669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289570226.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 868710669 is about 29473.8980964514. The cubic root of 868710669 is about 954.1684487787.

The spelling of 868710669 in words is "eight hundred sixty-eight million, seven hundred ten thousand, six hundred sixty-nine".