3906647 has 8 divisors (see below), whose sum is σ = 4147200. Its totient is φ = 3669624.

The previous prime is 3906641. The next prime is 3906653. The reversal of 3906647 is 7466093.

It is an interprime number because it is at equal distance from previous prime (3906641) and next prime (3906653).

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 3906647 - 2¹⁶ = 3841111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3906641) 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, 1604 + ... + 3222.

It is an arithmetic number, because the mean of its divisors is an integer number (518400).

Almost surely, 2^3906647 is an apocalyptic number.

3906647 is a deficient number, since it is larger than the sum of its proper divisors (240553).

3906647 is a wasteful number, since it uses less digits than its factorization.

3906647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 3906647 is about 1976.5239689920. The cubic root of 3906647 is about 157.4954664018.

The spelling of 3906647 in words is "three million, nine hundred six thousand, six hundred forty-seven".