7879868 has 6 divisors (see below), whose sum is σ = 13789776. Its totient is φ = 3939932.

The previous prime is 7879849. The next prime is 7879871. The reversal of 7879868 is 8689787.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984980 + ... + 984987.

It is an arithmetic number, because the mean of its divisors is an integer number (2298296).

Almost surely, 2^7879868 is an apocalyptic number.

It is an amenable number.

7879868 is a deficient number, since it is larger than the sum of its proper divisors (5909908).

7879868 is a wasteful number, since it uses less digits than its factorization.

7879868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969971 (or 1969969 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 53.

The square root of 7879868 is about 2807.1102578987. The cubic root of 7879868 is about 198.9938467665.

The spelling of 7879868 in words is "seven million, eight hundred seventy-nine thousand, eight hundred sixty-eight".