145668211 has 16 divisors (see below), whose sum is σ = 159264000. Its totient is φ = 132432768.

The previous prime is 145668197. The next prime is 145668217. The reversal of 145668211 is 112866541.

It is a de Polignac number, because none of the positive numbers 2^k-145668211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145668217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303870 + ... + 304348.

It is an arithmetic number, because the mean of its divisors is an integer number (9954000).

Almost surely, 2^145668211 is an apocalyptic number.

145668211 is a deficient number, since it is larger than the sum of its proper divisors (13595789).

145668211 is a wasteful number, since it uses less digits than its factorization.

145668211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798.

The product of its digits is 11520, while the sum is 34.

The square root of 145668211 is about 12069.3086380289. The cubic root of 145668211 is about 526.1645634383.

The spelling of 145668211 in words is "one hundred forty-five million, six hundred sixty-eight thousand, two hundred eleven".