3721663000 has 128 divisors (see below), whose sum is σ = 10000972800. Its totient is φ = 1282032000.

The previous prime is 3721662983. The next prime is 3721663007. The reversal of 3721663000 is 3661273.

It is a self number, because there is not a number n which added to its sum of digits gives 3721663000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721663007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200097 + ... + 217903.

It is an arithmetic number, because the mean of its divisors is an integer number (78132600).

Almost surely, 2^3721663000 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 3721663000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5000486400).

3721663000 is an abundant number, since it is smaller than the sum of its proper divisors (6279309800).

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

3721663000 is a wasteful number, since it uses less digits than its factorization.

3721663000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17858 (or 17844 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 3721663000 is about 61005.4341841774. The cubic root of 3721663000 is about 1549.6930366807.

The spelling of 3721663000 in words is "three billion, seven hundred twenty-one million, six hundred sixty-three thousand".