66186230 has 32 divisors (see below), whose sum is σ = 130387968. Its totient is φ = 23989600.

The previous prime is 66186227. The next prime is 66186233. The reversal of 66186230 is 3268166.

It is an interprime number because it is at equal distance from previous prime (66186227) and next prime (66186233).

It is a super-2 number, since 2×66186230² = 8761234083225800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66186233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41345 + ... + 42915.

It is an arithmetic number, because the mean of its divisors is an integer number (4074624).

Almost surely, 2^66186230 is an apocalyptic number.

66186230 is a deficient number, since it is larger than the sum of its proper divisors (64201738).

66186230 is a wasteful number, since it uses less digits than its factorization.

66186230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 66186230 is about 8135.4919949564. The cubic root of 66186230 is about 404.5037461907.

The spelling of 66186230 in words is "sixty-six million, one hundred eighty-six thousand, two hundred thirty".