868648406 has 8 divisors (see below), whose sum is σ = 1359623664. Its totient is φ = 415440520.

The previous prime is 868648399. The next prime is 868648409. The reversal of 868648406 is 604846868.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868648409) 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, 9441785 + ... + 9441876.

It is an arithmetic number, because the mean of its divisors is an integer number (169952958).

Almost surely, 2^868648406 is an apocalyptic number.

868648406 is a deficient number, since it is larger than the sum of its proper divisors (490975258).

868648406 is a wasteful number, since it uses less digits than its factorization.

868648406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18883686.

The product of its (nonzero) digits is 1769472, while the sum is 50.

The square root of 868648406 is about 29472.8418378683. The cubic root of 868648406 is about 954.1456522322.

The spelling of 868648406 in words is "eight hundred sixty-eight million, six hundred forty-eight thousand, four hundred six".