3639487696 has 80 divisors (see below), whose sum is σ = 8072122240. Its totient is φ = 1575728640.

The previous prime is 3639487693. The next prime is 3639487703. The reversal of 3639487696 is 6967849363.

3639487696 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3639487693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402586 + ... + 411526.

It is an arithmetic number, because the mean of its divisors is an integer number (100901528).

Almost surely, 2^3639487696 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 3639487696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4036061120).

3639487696 is an abundant number, since it is smaller than the sum of its proper divisors (4432634544).

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

3639487696 is a wasteful number, since it uses less digits than its factorization.

3639487696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9084 (or 9078 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 61.

The square root of 3639487696 is about 60328.1666885378. The cubic root of 3639487696 is about 1538.2021657686.

The spelling of 3639487696 in words is "three billion, six hundred thirty-nine million, four hundred eighty-seven thousand, six hundred ninety-six".