66412258 has 16 divisors (see below), whose sum is σ = 114395040. Its totient is φ = 28598400.

The previous prime is 66412249. The next prime is 66412267. The reversal of 66412258 is 85221466.

It is an interprime number because it is at equal distance from previous prime (66412249) and next prime (66412267).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 79023 + ... + 79858.

It is an arithmetic number, because the mean of its divisors is an integer number (7149690).

Almost surely, 2^66412258 is an apocalyptic number.

66412258 is a deficient number, since it is larger than the sum of its proper divisors (47982782).

66412258 is a wasteful number, since it uses less digits than its factorization.

66412258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158913.

The product of its digits is 23040, while the sum is 34.

The square root of 66412258 is about 8149.3716322180. The cubic root of 66412258 is about 404.9636872386.

The spelling of 66412258 in words is "sixty-six million, four hundred twelve thousand, two hundred fifty-eight".