672382191 has 16 divisors (see below), whose sum is σ = 965938176. Its totient is φ = 413573856.

The previous prime is 672382171. The next prime is 672382223. The reversal of 672382191 is 191283276.

It is not a de Polignac number, because 672382191 - 2¹¹ = 672380143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672382111) 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 15 ways as a sum of consecutive naturals, for example, 148426 + ... + 152888.

It is an arithmetic number, because the mean of its divisors is an integer number (60371136).

Almost surely, 2^672382191 is an apocalyptic number.

672382191 is a deficient number, since it is larger than the sum of its proper divisors (293555985).

672382191 is a wasteful number, since it uses less digits than its factorization.

672382191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8342.

The product of its digits is 36288, while the sum is 39.

The square root of 672382191 is about 25930.3334147481. Note that the first 3 decimals coincide. The cubic root of 672382191 is about 876.0698493645.

The spelling of 672382191 in words is "six hundred seventy-two million, three hundred eighty-two thousand, one hundred ninety-one".