3697721332 has 24 divisors (see below), whose sum is σ = 6526800896. Its totient is φ = 1832943168.

The previous prime is 3697721303. The next prime is 3697721333. The reversal of 3697721332 is 2331277963.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3697721333) 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, 1361608 + ... + 1364320.

Almost surely, 2^3697721332 is an apocalyptic number.

It is an amenable number.

3697721332 is a deficient number, since it is larger than the sum of its proper divisors (2829079564).

3697721332 is a wasteful number, since it uses less digits than its factorization.

3697721332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5527 (or 5525 counting only the distinct ones).

The product of its digits is 285768, while the sum is 43.

The square root of 3697721332 is about 60808.8918826844. The cubic root of 3697721332 is about 1546.3627976618.

The spelling of 3697721332 in words is "three billion, six hundred ninety-seven million, seven hundred twenty-one thousand, three hundred thirty-two".