2236745664 has 140 divisors (see below), whose sum is σ = 6979691400. Its totient is φ = 706309632.

The previous prime is 2236745657. The next prime is 2236745677. The reversal of 2236745664 is 4665476322.

2236745664 is a `hidden beast` number, since 2 + 23 + 67 + 4 + 566 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 87142 + ... + 109850.

Almost surely, 2^2236745664 is an apocalyptic number.

2236745664 is a gapful number since it is divisible by the number (24) 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 2236745664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3489845700).

2236745664 is an abundant number, since it is smaller than the sum of its proper divisors (4742945736).

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

2236745664 is a wasteful number, since it uses less digits than its factorization.

2236745664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22752 (or 22733 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

The square root of 2236745664 is about 47294.2455696251. The cubic root of 2236745664 is about 1307.7925771583.

The spelling of 2236745664 in words is "two billion, two hundred thirty-six million, seven hundred forty-five thousand, six hundred sixty-four".