3620516643 has 16 divisors (see below), whose sum is σ = 5477852160. Its totient is φ = 2362322088.

The previous prime is 3620516621. The next prime is 3620516659. The reversal of 3620516643 is 3466150263.

3620516643 is a `hidden beast` number, since 3 + 6 + 2 + 0 + 5 + 1 + 6 + 643 = 666.

It is not a de Polignac number, because 3620516643 - 2⁶ = 3620516579 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3620516598 and 3620516607.

It is not an unprimeable number, because it can be changed into a prime (3620516663) 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, 1425255 + ... + 1427792.

It is an arithmetic number, because the mean of its divisors is an integer number (342365760).

Almost surely, 2^3620516643 is an apocalyptic number.

3620516643 is a deficient number, since it is larger than the sum of its proper divisors (1857335517).

3620516643 is a wasteful number, since it uses less digits than its factorization.

3620516643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853103 (or 2853097 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 3620516643 is about 60170.7291213926. The cubic root of 3620516643 is about 1535.5248507427.

The spelling of 3620516643 in words is "three billion, six hundred twenty million, five hundred sixteen thousand, six hundred forty-three".