557337665 has 16 divisors (see below), whose sum is σ = 685419408. Its totient is φ = 434893056.

The previous prime is 557337647. The next prime is 557337667. The reversal of 557337665 is 566733755.

It is a happy number.

It is a Cunningham number, because it is equal to 23608²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1 + 557337664 = 1^2 + 23608^2 .

It is a cyclic number.

It is not a de Polignac number, because 557337665 - 2¹⁰ = 557336641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557337667) 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, 39767 + ... + 51923.

It is an arithmetic number, because the mean of its divisors is an integer number (42838713).

Almost surely, 2^557337665 is an apocalyptic number.

It is an amenable number.

557337665 is a deficient number, since it is larger than the sum of its proper divisors (128081743).

557337665 is a wasteful number, since it uses less digits than its factorization.

557337665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12388.

The product of its digits is 1984500, while the sum is 47.

The square root of 557337665 is about 23608.0000211793. Note that the first 4 decimals coincide. The cubic root of 557337665 is about 822.9487651835.

The spelling of 557337665 in words is "five hundred fifty-seven million, three hundred thirty-seven thousand, six hundred sixty-five".