7875868 has 72 divisors (see below), whose sum is σ = 18903024. Its totient is φ = 2822400.

The previous prime is 7875841. The next prime is 7875869. The reversal of 7875868 is 8685787.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7875869) 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 23 ways as a sum of consecutive naturals, for example, 27888 + ... + 28168.

It is an arithmetic number, because the mean of its divisors is an integer number (262542).

Almost surely, 2^7875868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7875868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9451512).

7875868 is an abundant number, since it is smaller than the sum of its proper divisors (11027156).

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

7875868 is a wasteful number, since it uses less digits than its factorization.

7875868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323 (or 314 counting only the distinct ones).

The product of its digits is 752640, while the sum is 49.

The square root of 7875868 is about 2806.3976909911. The cubic root of 7875868 is about 198.9601698017.

The spelling of 7875868 in words is "seven million, eight hundred seventy-five thousand, eight hundred sixty-eight".