7968215 has 4 divisors (see below), whose sum is σ = 9561864. Its totient is φ = 6374568.

The previous prime is 7968203. The next prime is 7968217. The reversal of 7968215 is 5128697.

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

It is a cyclic number.

It is not a de Polignac number, because 7968215 - 2⁴ = 7968199 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7968217) 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, 796817 + ... + 796826.

It is an arithmetic number, because the mean of its divisors is an integer number (2390466).

Almost surely, 2^7968215 is an apocalyptic number.

7968215 is a deficient number, since it is larger than the sum of its proper divisors (1593649).

7968215 is a wasteful number, since it uses less digits than its factorization.

7968215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593648.

The product of its digits is 30240, while the sum is 38.

The square root of 7968215 is about 2822.8026852758. The cubic root of 7968215 is about 199.7347734298.

It can be divided in two parts, 79682 and 15, that added together give a palindrome (79697).

The spelling of 7968215 in words is "seven million, nine hundred sixty-eight thousand, two hundred fifteen".