3906663 has 4 divisors (see below), whose sum is σ = 5208888. Its totient is φ = 2604440.

The previous prime is 3906659. The next prime is 3906667. The reversal of 3906663 is 3666093.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3906659) and next prime (3906667).

It is a cyclic number.

It is not a de Polignac number, because 3906663 - 2² = 3906659 is a prime.

It is a D-number.

3906663 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3906667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651108 + ... + 651113.

It is an arithmetic number, because the mean of its divisors is an integer number (1302222).

Almost surely, 2^3906663 is an apocalyptic number.

3906663 is a deficient number, since it is larger than the sum of its proper divisors (1302225).

3906663 is a wasteful number, since it uses less digits than its factorization.

3906663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302224.

The product of its (nonzero) digits is 17496, while the sum is 33.

The square root of 3906663 is about 1976.5280164976. The cubic root of 3906663 is about 157.4956814135.

The spelling of 3906663 in words is "three million, nine hundred six thousand, six hundred sixty-three".