10686816 has 240 divisors, whose sum is σ = 39029760. Its totient is φ = 2799360.

The previous prime is 10686811. The next prime is 10686817. The reversal of 10686816 is 61868601.

It is a super-2 number, since 2×10686816² = 228416072435712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10686811) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 344721 + ... + 344751.

It is an arithmetic number, because the mean of its divisors is an integer number (162624).

Almost surely, 2^10686816 is an apocalyptic number.

10686816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10686816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19514880).

10686816 is an abundant number, since it is smaller than the sum of its proper divisors (28342944).

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

10686816 is a wasteful number, since it uses less digits than its factorization.

10686816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 10686816 is about 3269.0695924070. The cubic root of 10686816 is about 220.2670036428.

The spelling of 10686816 in words is "ten million, six hundred eighty-six thousand, eight hundred sixteen".