3608616661 has 8 divisors (see below), whose sum is σ = 3909475584. Its totient is φ = 3311082480.

The previous prime is 3608616643. The next prime is 3608616689. The reversal of 3608616661 is 1666168063.

3608616661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3608616661 is a prime.

It is a super-2 number, since 2×3608616661² = 26044228412093577842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3608616761) 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 7 ways as a sum of consecutive naturals, for example, 828925 + ... + 833266.

It is an arithmetic number, because the mean of its divisors is an integer number (488684448).

Almost surely, 2^3608616661 is an apocalyptic number.

It is an amenable number.

3608616661 is a deficient number, since it is larger than the sum of its proper divisors (300858923).

3608616661 is a wasteful number, since it uses less digits than its factorization.

3608616661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662371.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 3608616661 is about 60071.7625927523. The cubic root of 3608616661 is about 1533.8406735724.

The spelling of 3608616661 in words is "three billion, six hundred eight million, six hundred sixteen thousand, six hundred sixty-one".