3966653 has 4 divisors (see below), whose sum is σ = 4014528. Its totient is φ = 3918780.

The previous prime is 3966631. The next prime is 3966689. The reversal of 3966653 is 3566693.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3566693 = 13 ⋅274361.

It is a cyclic number.

It is not a de Polignac number, because 3966653 - 2¹⁰ = 3965629 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 (3966623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23813 + ... + 23978.

It is an arithmetic number, because the mean of its divisors is an integer number (1003632).

Almost surely, 2^3966653 is an apocalyptic number.

It is an amenable number.

3966653 is a deficient number, since it is larger than the sum of its proper divisors (47875).

3966653 is an equidigital number, since it uses as much as digits as its factorization.

3966653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47874.

The product of its digits is 87480, while the sum is 38.

The square root of 3966653 is about 1991.6458018433. The cubic root of 3966653 is about 158.2977481124.

The spelling of 3966653 in words is "three million, nine hundred sixty-six thousand, six hundred fifty-three".