686244468 has 192 divisors, whose sum is σ = 2086318080. Its totient is φ = 170615808.

The previous prime is 686244467. The next prime is 686244479. The reversal of 686244468 is 864442686.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (686244467) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2235171 + ... + 2235477.

It is an arithmetic number, because the mean of its divisors is an integer number (10866240).

Almost surely, 2^686244468 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 686244468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1043159040).

686244468 is an abundant number, since it is smaller than the sum of its proper divisors (1400073612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

686244468 is a wasteful number, since it uses less digits than its factorization.

686244468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 444 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 48.

The square root of 686244468 is about 26196.2682075138. The cubic root of 686244468 is about 882.0494879190.

The spelling of 686244468 in words is "six hundred eighty-six million, two hundred forty-four thousand, four hundred sixty-eight".