146672217 has 6 divisors (see below), whose sum is σ = 211859882. Its totient is φ = 97781472.

The previous prime is 146672203. The next prime is 146672233. The reversal of 146672217 is 712276641.

It can be written as a sum of positive squares in only one way, i.e., 83612736 + 63059481 = 9144^2 + 7941^2 .

It is not a de Polignac number, because 146672217 - 2⁸ = 146671961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146672287) 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 5 ways as a sum of consecutive naturals, for example, 8148448 + ... + 8148465.

Almost surely, 2^146672217 is an apocalyptic number.

It is an amenable number.

146672217 is a deficient number, since it is larger than the sum of its proper divisors (65187665).

146672217 is a wasteful number, since it uses less digits than its factorization.

146672217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16296919 (or 16296916 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 146672217 is about 12110.8305660677. The cubic root of 146672217 is about 527.3706451909.

The spelling of 146672217 in words is "one hundred forty-six million, six hundred seventy-two thousand, two hundred seventeen".