7961868 has 24 divisors (see below), whose sum is σ = 20642160. Its totient is φ = 2653920.

The previous prime is 7961839. The next prime is 7961879. The reversal of 7961868 is 8681697.

Added to its reverse (8681697) it gives a triangular number (16643565 = T₅₇₆₉).

It is a happy number.

It is a zygodrome in base 3.

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 in 7 ways as a sum of consecutive naturals, for example, 36753 + ... + 36968.

It is an arithmetic number, because the mean of its divisors is an integer number (860090).

Almost surely, 2^7961868 is an apocalyptic number.

It is an amenable number.

7961868 is an abundant number, since it is smaller than the sum of its proper divisors (12680292).

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

7961868 is a wasteful number, since it uses less digits than its factorization.

7961868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73734 (or 73726 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 7961868 is about 2821.6782240362. The cubic root of 7961868 is about 199.6817271139.

Adding to 7961868 its reverse (8681697), we get a triangular number (16643565 = T₅₇₆₉).

The spelling of 7961868 in words is "seven million, nine hundred sixty-one thousand, eight hundred sixty-eight".