7896815 has 4 divisors (see below), whose sum is σ = 9476184. Its totient is φ = 6317448.

The previous prime is 7896809. The next prime is 7896827. The reversal of 7896815 is 5186987.

It is a happy number.

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 7896815 - 2¹⁰ = 7895791 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789677 + ... + 789686.

It is an arithmetic number, because the mean of its divisors is an integer number (2369046).

Almost surely, 2^7896815 is an apocalyptic number.

7896815 is a deficient number, since it is larger than the sum of its proper divisors (1579369).

7896815 is a wasteful number, since it uses less digits than its factorization.

7896815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579368.

The product of its digits is 120960, while the sum is 44.

The square root of 7896815 is about 2810.1272213193. The cubic root of 7896815 is about 199.1364013542.

The spelling of 7896815 in words is "seven million, eight hundred ninety-six thousand, eight hundred fifteen".