5665907923 has 4 divisors (see below), whose sum is σ = 6101747008. Its totient is φ = 5230068840.

The previous prime is 5665907903. The next prime is 5665907981. The reversal of 5665907923 is 3297095665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3297095665 = 5 ⋅659419133.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5665907923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5665907903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217919523 + ... + 217919548.

It is an arithmetic number, because the mean of its divisors is an integer number (1525436752).

Almost surely, 2^5665907923 is an apocalyptic number.

5665907923 is a deficient number, since it is larger than the sum of its proper divisors (435839085).

5665907923 is a wasteful number, since it uses less digits than its factorization.

5665907923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435839084.

The product of its (nonzero) digits is 3061800, while the sum is 52.

The square root of 5665907923 is about 75272.2254420580. The cubic root of 5665907923 is about 1782.7475057581.

The spelling of 5665907923 in words is "five billion, six hundred sixty-five million, nine hundred seven thousand, nine hundred twenty-three".