166230447 has 4 divisors (see below), whose sum is σ = 221640600. Its totient is φ = 110820296.

The previous prime is 166230443. The next prime is 166230461. The reversal of 166230447 is 744032661.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166230447 - 2² = 166230443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166230443) 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 3 ways as a sum of consecutive naturals, for example, 27705072 + ... + 27705077.

It is an arithmetic number, because the mean of its divisors is an integer number (55410150).

Almost surely, 2^166230447 is an apocalyptic number.

166230447 is a deficient number, since it is larger than the sum of its proper divisors (55410153).

166230447 is an equidigital number, since it uses as much as digits as its factorization.

166230447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55410152.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 166230447 is about 12893.0387031142. The cubic root of 166230447 is about 549.8406667938.

The spelling of 166230447 in words is "one hundred sixty-six million, two hundred thirty thousand, four hundred forty-seven".