7976845 has 4 divisors (see below), whose sum is σ = 9572220. Its totient is φ = 6381472.

The previous prime is 7976833. The next prime is 7976849. The reversal of 7976845 is 5486797.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5486797 = 193 ⋅28429.

It can be written as a sum of positive squares in 2 ways, for example, as 3392964 + 4583881 = 1842^2 + 2141^2 .

It is a cyclic number.

It is not a de Polignac number, because 7976845 - 2²¹ = 5879693 is a prime.

7976845 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7976795 and 7976804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7976849) 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, 797680 + ... + 797689.

It is an arithmetic number, because the mean of its divisors is an integer number (2393055).

Almost surely, 2^7976845 is an apocalyptic number.

It is an amenable number.

7976845 is a deficient number, since it is larger than the sum of its proper divisors (1595375).

7976845 is a wasteful number, since it uses less digits than its factorization.

7976845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595374.

The product of its digits is 423360, while the sum is 46.

The square root of 7976845 is about 2824.3308942119. The cubic root of 7976845 is about 199.8068552021.

The spelling of 7976845 in words is "seven million, nine hundred seventy-six thousand, eight hundred forty-five".