326993616 has 60 divisors (see below), whose sum is σ = 919807200. Its totient is φ = 108440640.

The previous prime is 326993603. The next prime is 326993621. The reversal of 326993616 is 616399623.

It is a happy number.

326993616 is a `hidden beast` number, since 3 + 26 + 9 + 9 + 3 + 616 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22951 + ... + 34361.

It is an arithmetic number, because the mean of its divisors is an integer number (15330120).

Almost surely, 2^326993616 is an apocalyptic number.

326993616 is a gapful number since it is divisible by the number (36) 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 326993616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (459903600).

326993616 is an abundant number, since it is smaller than the sum of its proper divisors (592813584).

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

326993616 is a wasteful number, since it uses less digits than its factorization.

326993616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11624 (or 11615 counting only the distinct ones).

The product of its digits is 314928, while the sum is 45.

The square root of 326993616 is about 18082.9648011602. The cubic root of 326993616 is about 688.9373940333.

It can be divided in two parts, 32699 and 3616, that added together give a triangular number (36315 = T₂₆₉).

The spelling of 326993616 in words is "three hundred twenty-six million, nine hundred ninety-three thousand, six hundred sixteen".