58666381 has 2 divisors, whose sum is σ = 58666382. Its totient is φ = 58666380.

The previous prime is 58666379. The next prime is 58666393. The reversal of 58666381 is 18366685.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30140100 + 28526281 = 5490^2 + 5341^2 .

It is a cyclic number.

It is not a de Polignac number, because 58666381 - 2¹ = 58666379 is a prime.

It is a super-2 number, since 2×58666381² = 6883488519274322, which contains 22 as substring.

Together with 58666379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (58666301) 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 as a sum of consecutive naturals, namely, 29333190 + 29333191.

It is an arithmetic number, because the mean of its divisors is an integer number (29333191).

Almost surely, 2^58666381 is an apocalyptic number.

It is an amenable number.

58666381 is a deficient number, since it is larger than the sum of its proper divisors (1).

58666381 is an equidigital number, since it uses as much as digits as its factorization.

58666381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 43.

The square root of 58666381 is about 7659.3982139591. The cubic root of 58666381 is about 388.5644815334.

The spelling of 58666381 in words is "fifty-eight million, six hundred sixty-six thousand, three hundred eighty-one".