3985697632 has 36 divisors (see below), whose sum is σ = 9127962900. Its totient is φ = 1708155456.

The previous prime is 3985697567. The next prime is 3985697641. The reversal of 3985697632 is 2367965893.

3985697632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3985697632² = 31771571227460814848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1269382 + ... + 1272517.

It is an arithmetic number, because the mean of its divisors is an integer number (253554525).

Almost surely, 2^3985697632 is an apocalyptic number.

3985697632 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3985697632 is an abundant number, since it is smaller than the sum of its proper divisors (5142265268).

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

3985697632 is a wasteful number, since it uses less digits than its factorization.

3985697632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541923 (or 2541908 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 58.

The square root of 3985697632 is about 63132.3818020515. The cubic root of 3985697632 is about 1585.5068263444.

The spelling of 3985697632 in words is "three billion, nine hundred eighty-five million, six hundred ninety-seven thousand, six hundred thirty-two".