116666557 has 16 divisors (see below), whose sum is σ = 139732992. Its totient is φ = 95238000.

The previous prime is 116666533. The next prime is 116666573. The reversal of 116666557 is 755666611.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116666557 is a prime.

It is a super-2 number, since 2×116666557² = 27222171044468498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116666527) 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, 38968 + ... + 41854.

It is an arithmetic number, because the mean of its divisors is an integer number (8733312).

Almost surely, 2^116666557 is an apocalyptic number.

It is an amenable number.

116666557 is a deficient number, since it is larger than the sum of its proper divisors (23066435).

116666557 is a wasteful number, since it uses less digits than its factorization.

116666557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3168.

The product of its digits is 226800, while the sum is 43.

The square root of 116666557 is about 10801.2294207650. The cubic root of 116666557 is about 488.6322498545.

The spelling of 116666557 in words is "one hundred sixteen million, six hundred sixty-six thousand, five hundred fifty-seven".