7879870 has 32 divisors (see below), whose sum is σ = 15177600. Its totient is φ = 2936736.

The previous prime is 7879849. The next prime is 7879871. The reversal of 7879870 is 789787.

It is a happy number.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 7879870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7879871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12421 + ... + 13039.

It is an arithmetic number, because the mean of its divisors is an integer number (474300).

Almost surely, 2^7879870 is an apocalyptic number.

7879870 is a deficient number, since it is larger than the sum of its proper divisors (7297730).

7879870 is a wasteful number, since it uses less digits than its factorization.

7879870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712.

The product of its (nonzero) digits is 197568, while the sum is 46.

The square root of 7879870 is about 2807.1106141369. The cubic root of 7879870 is about 198.9938636021.

The spelling of 7879870 in words is "seven million, eight hundred seventy-nine thousand, eight hundred seventy".