7967878 has 16 divisors (see below), whose sum is σ = 12640320. Its totient is φ = 3756456.

The previous prime is 7967851. The next prime is 7967879. The reversal of 7967878 is 8787697.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7967879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11325 + ... + 12007.

It is an arithmetic number, because the mean of its divisors is an integer number (790020).

Almost surely, 2^7967878 is an apocalyptic number.

7967878 is a deficient number, since it is larger than the sum of its proper divisors (4672442).

7967878 is a wasteful number, since it uses less digits than its factorization.

7967878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011.

The product of its digits is 1185408, while the sum is 52.

The square root of 7967878 is about 2822.7429921975. The cubic root of 7967878 is about 199.7319575935.

The spelling of 7967878 in words is "seven million, nine hundred sixty-seven thousand, eight hundred seventy-eight".