5660120645 has 4 divisors (see below), whose sum is σ = 6792144780. Its totient is φ = 4528096512.

The previous prime is 5660120611. The next prime is 5660120651. The reversal of 5660120645 is 5460210665.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2999314756 + 2660805889 = 54766^2 + 51583^2 .

It is a cyclic number.

It is not a de Polignac number, because 5660120645 - 2¹⁶ = 5660055109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566012060 + ... + 566012069.

It is an arithmetic number, because the mean of its divisors is an integer number (1698036195).

Almost surely, 2^5660120645 is an apocalyptic number.

It is an amenable number.

5660120645 is a deficient number, since it is larger than the sum of its proper divisors (1132024135).

5660120645 is a wasteful number, since it uses less digits than its factorization.

5660120645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1132024134.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 5660120645 is about 75233.7733002938. The cubic root of 5660120645 is about 1782.1403203309.

The spelling of 5660120645 in words is "five billion, six hundred sixty million, one hundred twenty thousand, six hundred forty-five".