3968653 has 4 divisors (see below), whose sum is σ = 4273948. Its totient is φ = 3663360.

The previous prime is 3968647. The next prime is 3968669. The reversal of 3968653 is 3568693.

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

It can be written as a sum of positive squares in 2 ways, for example, as 293764 + 3674889 = 542^2 + 1917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3968653 is a prime.

It is a Duffinian number.

3968653 is a lucky number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3968603) 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, 152628 + ... + 152653.

It is an arithmetic number, because the mean of its divisors is an integer number (1068487).

Almost surely, 2^3968653 is an apocalyptic number.

It is an amenable number.

3968653 is a deficient number, since it is larger than the sum of its proper divisors (305295).

3968653 is a wasteful number, since it uses less digits than its factorization.

3968653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305294.

The product of its digits is 116640, while the sum is 40.

The square root of 3968653 is about 1992.1478358797. The cubic root of 3968653 is about 158.3243483975.

Adding to 3968653 its sum of digits (40), we get a palindrome (3968693).

The spelling of 3968653 in words is "three million, nine hundred sixty-eight thousand, six hundred fifty-three".