3664445436 has 72 divisors (see below), whose sum is σ = 9512366864. Its totient is φ = 1189002240.

The previous prime is 3664445419. The next prime is 3664445441. The reversal of 3664445436 is 6345444663.

3664445436 is a `hidden beast` number, since 3 + 6 + 64 + 44 + 543 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 3664445391 and 3664445400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 204411 + ... + 221613.

Almost surely, 2^3664445436 is an apocalyptic number.

3664445436 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 3664445436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4756183432).

3664445436 is an abundant number, since it is smaller than the sum of its proper divisors (5847921428).

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

3664445436 is a wasteful number, since it uses less digits than its factorization.

3664445436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17371 (or 17366 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 45.

The square root of 3664445436 is about 60534.6630947922. The cubic root of 3664445436 is about 1541.7102263001.

The spelling of 3664445436 in words is "three billion, six hundred sixty-four million, four hundred forty-five thousand, four hundred thirty-six".