3709997648 has 80 divisors (see below), whose sum is σ = 8359464960. Its totient is φ = 1562198400.

The previous prime is 3709997647. The next prime is 3709997651. The reversal of 3709997648 is 8467999073.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3709997647) 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, 3013193 + ... + 3014423.

It is an arithmetic number, because the mean of its divisors is an integer number (104493312).

Almost surely, 2^3709997648 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 3709997648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4179732480).

3709997648 is an abundant number, since it is smaller than the sum of its proper divisors (4649467312).

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

3709997648 is a wasteful number, since it uses less digits than its factorization.

3709997648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696 (or 1690 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 62.

The square root of 3709997648 is about 60909.7500241135. The cubic root of 3709997648 is about 1548.0721989352.

The spelling of 3709997648 in words is "three billion, seven hundred nine million, nine hundred ninety-seven thousand, six hundred forty-eight".