3663720572 has 24 divisors (see below), whose sum is σ = 6581807232. Its totient is φ = 1783479600.

The previous prime is 3663720563. The next prime is 3663720583. The reversal of 3663720572 is 2750273663.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19247 + ... + 87737.

It is an arithmetic number, because the mean of its divisors is an integer number (274241968).

Almost surely, 2^3663720572 is an apocalyptic number.

It is an amenable number.

3663720572 is a deficient number, since it is larger than the sum of its proper divisors (2918086660).

3663720572 is a wasteful number, since it uses less digits than its factorization.

3663720572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68849 (or 68847 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 41.

The square root of 3663720572 is about 60528.6756174295. The cubic root of 3663720572 is about 1541.6085643565.

The spelling of 3663720572 in words is "three billion, six hundred sixty-three million, seven hundred twenty thousand, five hundred seventy-two".