67872291 has 4 divisors (see below), whose sum is σ = 90496392. Its totient is φ = 45248192.

The previous prime is 67872283. The next prime is 67872293. The reversal of 67872291 is 19227876.

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 67872291 - 2³ = 67872283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67872293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11312046 + ... + 11312051.

It is an arithmetic number, because the mean of its divisors is an integer number (22624098).

Almost surely, 2^67872291 is an apocalyptic number.

67872291 is a deficient number, since it is larger than the sum of its proper divisors (22624101).

67872291 is a wasteful number, since it uses less digits than its factorization.

67872291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22624100.

The product of its digits is 84672, while the sum is 42.

The square root of 67872291 is about 8238.4641165693. The cubic root of 67872291 is about 407.9098284484.

The spelling of 67872291 in words is "sixty-seven million, eight hundred seventy-two thousand, two hundred ninety-one".