7716604661 has 4 divisors (see below), whose sum is σ = 7965527424. Its totient is φ = 7467681900.

The previous prime is 7716604639. The next prime is 7716604663. The reversal of 7716604661 is 1664066177.

7716604661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 7716604661 - 2¹⁴ = 7716588277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7716604663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124461335 + ... + 124461396.

It is an arithmetic number, because the mean of its divisors is an integer number (1991381856).

Almost surely, 2^7716604661 is an apocalyptic number.

It is an amenable number.

7716604661 is a deficient number, since it is larger than the sum of its proper divisors (248922763).

7716604661 is a wasteful number, since it uses less digits than its factorization.

7716604661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248922762.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 7716604661 is about 87844.2067583287. The cubic root of 7716604661 is about 1976.0992362654.

The spelling of 7716604661 in words is "seven billion, seven hundred sixteen million, six hundred four thousand, six hundred sixty-one".