5661405287 has 16 divisors (see below), whose sum is σ = 5876290560. Its totient is φ = 5448643200.

The previous prime is 5661405247. The next prime is 5661405289. The reversal of 5661405287 is 7825041665.

It is a cyclic number.

It is not a de Polignac number, because 5661405287 - 2¹⁰ = 5661404263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661405289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6590264 + ... + 6591122.

It is an arithmetic number, because the mean of its divisors is an integer number (367268160).

Almost surely, 2^5661405287 is an apocalyptic number.

5661405287 is a deficient number, since it is larger than the sum of its proper divisors (214885273).

5661405287 is a wasteful number, since it uses less digits than its factorization.

5661405287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1814.

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 5661405287 is about 75242.3104841950. The cubic root of 5661405287 is about 1782.2751371936.

The spelling of 5661405287 in words is "five billion, six hundred sixty-one million, four hundred five thousand, two hundred eighty-seven".