3599660736 has 420 divisors, whose sum is σ = 12781410048. Its totient is φ = 998065152.

The previous prime is 3599660707. The next prime is 3599660761. The reversal of 3599660736 is 6370669953.

It is a happy number.

3599660736 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 9398401 + ... + 9398783.

Almost surely, 2^3599660736 is an apocalyptic number.

3599660736 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 3599660736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6390705024).

3599660736 is an abundant number, since it is smaller than the sum of its proper divisors (9181749312).

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

3599660736 is a wasteful number, since it uses less digits than its factorization.

3599660736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 5511240, while the sum is 54.

The square root of 3599660736 is about 59997.1727333880. The cubic root of 3599660736 is about 1532.5707186074.

The spelling of 3599660736 in words is "three billion, five hundred ninety-nine million, six hundred sixty thousand, seven hundred thirty-six".