146145647 has 4 divisors (see below), whose sum is σ = 146612880. Its totient is φ = 145678416.

The previous prime is 146145641. The next prime is 146145661. The reversal of 146145647 is 746541641.

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 146145647 - 2²⁴ = 129368431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 146145647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146145641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233147 + ... + 233772.

It is an arithmetic number, because the mean of its divisors is an integer number (36653220).

Almost surely, 2^146145647 is an apocalyptic number.

146145647 is a deficient number, since it is larger than the sum of its proper divisors (467233).

146145647 is an equidigital number, since it uses as much as digits as its factorization.

146145647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467232.

The product of its digits is 80640, while the sum is 38.

The square root of 146145647 is about 12089.0713870007. The cubic root of 146145647 is about 526.7387814958.

The spelling of 146145647 in words is "one hundred forty-six million, one hundred forty-five thousand, six hundred forty-seven".