3605917644 has 432 divisors, whose sum is σ = 11855241216. Its totient is φ = 918086400.

The previous prime is 3605917643. The next prime is 3605917669. The reversal of 3605917644 is 4467195063.

It is a self number, because there is not a number n which added to its sum of digits gives 3605917644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3605917643) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 59113374 + ... + 59113434.

It is an arithmetic number, because the mean of its divisors is an integer number (27442688).

Almost surely, 2^3605917644 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 3605917644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5927620608).

3605917644 is an abundant number, since it is smaller than the sum of its proper divisors (8249323572).

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

3605917644 is a wasteful number, since it uses less digits than its factorization.

3605917644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 3605917644 is about 60049.2934512972. The cubic root of 3605917644 is about 1533.4581729274.

The spelling of 3605917644 in words is "three billion, six hundred five million, nine hundred seventeen thousand, six hundred forty-four".