3611645532 has 72 divisors (see below), whose sum is σ = 9986925312. Its totient is φ = 1091412000.

The previous prime is 3611645509. The next prime is 3611645561. The reversal of 3611645532 is 2355461163.

3611645532 is a `hidden beast` number, since 3 + 6 + 1 + 1 + 645 + 5 + 3 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132907 + ... + 157757.

It is an arithmetic number, because the mean of its divisors is an integer number (138707296).

Almost surely, 2^3611645532 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 3611645532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4993462656).

3611645532 is an abundant number, since it is smaller than the sum of its proper divisors (6375279780).

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

3611645532 is a wasteful number, since it uses less digits than its factorization.

3611645532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25239 (or 25234 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 3611645532 is about 60096.9677438055. The cubic root of 3611645532 is about 1534.2696935882.

The spelling of 3611645532 in words is "three billion, six hundred eleven million, six hundred forty-five thousand, five hundred thirty-two".