3958656 has 96 divisors (see below), whose sum is σ = 11572920. Its totient is φ = 1198080.

The previous prime is 3958627. The next prime is 3958657. The reversal of 3958656 is 6568593.

It is a tau number, because it is divible by the number of its divisors (96).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3958657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64866 + ... + 64926.

Almost surely, 2^3958656 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 3958656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5786460).

3958656 is an abundant number, since it is smaller than the sum of its proper divisors (7614264).

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

3958656 is a wasteful number, since it uses less digits than its factorization.

3958656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 79 counting only the distinct ones).

The product of its digits is 194400, while the sum is 42.

The square root of 3958656 is about 1989.6371528497. The cubic root of 3958656 is about 158.1912974297.

The spelling of 3958656 in words is "three million, nine hundred fifty-eight thousand, six hundred fifty-six".