326687727366 has 768 divisors, whose sum is σ = 1063402905600. Its totient is φ = 71593632000.

The previous prime is 326687727349. The next prime is 326687727439. The reversal of 326687727366 is 663727786623.

326687727366 is a `hidden beast` number, since 3 + 266 + 8 + 7 + 7 + 2 + 7 + 366 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 986971821 + ... + 986972151.

It is an arithmetic number, because the mean of its divisors is an integer number (1384639200).

Almost surely, 2^326687727366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 326687727366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531701452800).

326687727366 is an abundant number, since it is smaller than the sum of its proper divisors (736715178234).

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

326687727366 is a wasteful number, since it uses less digits than its factorization.

326687727366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 417 counting only the distinct ones).

The product of its digits is 128024064, while the sum is 63.

The spelling of 326687727366 in words is "three hundred twenty-six billion, six hundred eighty-seven million, seven hundred twenty-seven thousand, three hundred sixty-six".