7878616 has 32 divisors (see below), whose sum is σ = 16470000. Its totient is φ = 3511296.

The previous prime is 7878613. The next prime is 7878641. The reversal of 7878616 is 6168787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7878613) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 1060 + ... + 4108.

Almost surely, 2^7878616 is an apocalyptic number.

7878616 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

7878616 is an abundant number, since it is smaller than the sum of its proper divisors (8591384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7878616 is a wasteful number, since it uses less digits than its factorization.

7878616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091 (or 3087 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The square root of 7878616 is about 2806.8872439056. The cubic root of 7878616 is about 198.9833071021.

The spelling of 7878616 in words is "seven million, eight hundred seventy-eight thousand, six hundred sixteen".