3620644000 has 48 divisors (see below), whose sum is σ = 8895932136. Its totient is φ = 1448256000.

The previous prime is 3620643947. The next prime is 3620644007. The reversal of 3620644000 is 4460263.

3620644000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 729216016 + 2891427984 = 27004^2 + 53772^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (3620644007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448581 + ... + 456580.

Almost surely, 2^3620644000 is an apocalyptic number.

It is an amenable number.

3620644000 is an abundant number, since it is smaller than the sum of its proper divisors (5275288136).

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

3620644000 is an equidigital number, since it uses as much as digits as its factorization.

3620644000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905186 (or 905168 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 3620644000 is about 60171.7874090508. The cubic root of 3620644000 is about 1535.5428553136.

The spelling of 3620644000 in words is "three billion, six hundred twenty million, six hundred forty-four thousand".