3645665016 has 64 divisors (see below), whose sum is σ = 10422969600. Its totient is φ = 1040940288.

The previous prime is 3645664991. The next prime is 3645665017. The reversal of 3645665016 is 6105665463.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645665017) 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, 288315 + ... + 300693.

It is an arithmetic number, because the mean of its divisors is an integer number (162858900).

Almost surely, 2^3645665016 is an apocalyptic number.

It is an amenable number.

3645665016 is an abundant number, since it is smaller than the sum of its proper divisors (6777304584).

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

3645665016 is a wasteful number, since it uses less digits than its factorization.

3645665016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14148 (or 14144 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 42.

The square root of 3645665016 is about 60379.3426264314. The cubic root of 3645665016 is about 1539.0719398456.

The spelling of 3645665016 in words is "three billion, six hundred forty-five million, six hundred sixty-five thousand, sixteen".