58666661 has 16 divisors (see below), whose sum is σ = 63250560. Its totient is φ = 54250560.

The previous prime is 58666649. The next prime is 58666679. The reversal of 58666661 is 16666685.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-58666661 is a prime.

It is a super-2 number, since 2×58666661² = 6883554225777842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58666631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211655 + ... + 211931.

It is an arithmetic number, because the mean of its divisors is an integer number (3953160).

Almost surely, 2^58666661 is an apocalyptic number.

It is an amenable number.

58666661 is a deficient number, since it is larger than the sum of its proper divisors (4583899).

58666661 is a wasteful number, since it uses less digits than its factorization.

58666661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524.

The product of its digits is 311040, while the sum is 44.

The square root of 58666661 is about 7659.4164921357. The cubic root of 58666661 is about 388.5650997061.

The spelling of 58666661 in words is "fifty-eight million, six hundred sixty-six thousand, six hundred sixty-one".