7768836 has 18 divisors (see below), whose sum is σ = 19637982. Its totient is φ = 2589600.

The previous prime is 7768811. The next prime is 7768843. The reversal of 7768836 is 6388677.

7768836 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6969600 + 799236 = 2640^2 + 894^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 7768791 and 7768800.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107865 + ... + 107936.

It is an arithmetic number, because the mean of its divisors is an integer number (1090999).

Almost surely, 2^7768836 is an apocalyptic number.

It is an amenable number.

7768836 is an abundant number, since it is smaller than the sum of its proper divisors (11869146).

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

7768836 is a wasteful number, since it uses less digits than its factorization.

7768836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215811 (or 215806 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 7768836 is about 2787.2631737961. The cubic root of 7768836 is about 198.0547751730.

The spelling of 7768836 in words is "seven million, seven hundred sixty-eight thousand, eight hundred thirty-six".