3975678 has 48 divisors (see below), whose sum is σ = 9959040. Its totient is φ = 1122768.

The previous prime is 3975677. The next prime is 3975701. The reversal of 3975678 is 8765793.

It is a happy number.

Its product of digits (317520) is a multiple of the sum of its prime divisors (378).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3975677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17401 + ... + 17627.

It is an arithmetic number, because the mean of its divisors is an integer number (207480).

Almost surely, 2^3975678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3975678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4979520).

3975678 is an abundant number, since it is smaller than the sum of its proper divisors (5983362).

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

3975678 is a wasteful number, since it uses less digits than its factorization.

3975678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 378 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 3975678 is about 1993.9102286713. The cubic root of 3975678 is about 158.4177111356.

The spelling of 3975678 in words is "three million, nine hundred seventy-five thousand, six hundred seventy-eight".