5660366261 has 4 divisors (see below), whose sum is σ = 6174945024. Its totient is φ = 5145787500.

The previous prime is 5660366237. The next prime is 5660366287. The reversal of 5660366261 is 1626630665.

It is a happy number.

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 5660366261 - 2²² = 5656171957 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 (5660366221) 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, 257289365 + ... + 257289386.

It is an arithmetic number, because the mean of its divisors is an integer number (1543736256).

Almost surely, 2^5660366261 is an apocalyptic number.

It is an amenable number.

5660366261 is a deficient number, since it is larger than the sum of its proper divisors (514578763).

5660366261 is a wasteful number, since it uses less digits than its factorization.

5660366261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514578762.

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 5660366261 is about 75235.4056345814. The cubic root of 5660366261 is about 1782.1660980998.

The spelling of 5660366261 in words is "five billion, six hundred sixty million, three hundred sixty-six thousand, two hundred sixty-one".