366620740864 has 216 divisors, whose sum is σ = 876451236360. Its totient is φ = 152611651584.

The previous prime is 366620740859. The next prime is 366620740879. The reversal of 366620740864 is 468047026663.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 270649657600 + 95971083264 = 520240^2 + 309792^2 .

It is a super-3 number, since 3×366620740864³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 635390944 + ... + 635391520.

Almost surely, 2^366620740864 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 366620740864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (438225618180).

366620740864 is an abundant number, since it is smaller than the sum of its proper divisors (509830495496).

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

366620740864 is an frugal number, since it uses more digits than its factorization.

366620740864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 52.

The spelling of 366620740864 in words is "three hundred sixty-six billion, six hundred twenty million, seven hundred forty thousand, eight hundred sixty-four".