7788961 has 4 divisors (see below), whose sum is σ = 7797424. Its totient is φ = 7780500.

The previous prime is 7788953. The next prime is 7788983. The reversal of 7788961 is 1698877.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7788961 - 2³ = 7788953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7788931) 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 3 ways as a sum of consecutive naturals, for example, 2655 + ... + 4756.

It is an arithmetic number, because the mean of its divisors is an integer number (1949356).

Almost surely, 2^7788961 is an apocalyptic number.

It is an amenable number.

7788961 is a deficient number, since it is larger than the sum of its proper divisors (8463).

7788961 is a wasteful number, since it uses less digits than its factorization.

7788961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8462.

The product of its digits is 169344, while the sum is 46.

The square root of 7788961 is about 2790.8710109928. The cubic root of 7788961 is about 198.2256465682.

The spelling of 7788961 in words is "seven million, seven hundred eighty-eight thousand, nine hundred sixty-one".