557701666 has 8 divisors (see below), whose sum is σ = 859162140. Its totient is φ = 271314288.

The previous prime is 557701633. The next prime is 557701667. The reversal of 557701666 is 666107755.

It can be written as a sum of positive squares in 2 ways, for example, as 512071641 + 45630025 = 22629^2 + 6755^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×557701666² = 622062296518351112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (557701667) 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, 3768181 + ... + 3768328.

Almost surely, 2^557701666 is an apocalyptic number.

557701666 is a deficient number, since it is larger than the sum of its proper divisors (301460474).

557701666 is a wasteful number, since it uses less digits than its factorization.

557701666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7536548.

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 557701666 is about 23615.7080351193. The cubic root of 557701666 is about 823.1278839968.

The spelling of 557701666 in words is "five hundred fifty-seven million, seven hundred one thousand, six hundred sixty-six".