3975647 has 8 divisors (see below), whose sum is σ = 4386480. Its totient is φ = 3579840.

The previous prime is 3975599. The next prime is 3975649. The reversal of 3975647 is 7465793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3975647 - 2¹⁰ = 3974623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3975649) 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, 3197 + ... + 4262.

It is an arithmetic number, because the mean of its divisors is an integer number (548310).

Almost surely, 2^3975647 is an apocalyptic number.

3975647 is a deficient number, since it is larger than the sum of its proper divisors (410833).

3975647 is a wasteful number, since it uses less digits than its factorization.

3975647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7513.

The product of its digits is 158760, while the sum is 41.

The square root of 3975647 is about 1993.9024549862. The cubic root of 3975647 is about 158.4172993851.

The spelling of 3975647 in words is "three million, nine hundred seventy-five thousand, six hundred forty-seven".