67256231 has 8 divisors (see below), whose sum is σ = 77015424. Its totient is φ = 57534840.

The previous prime is 67256227. The next prime is 67256237. The reversal of 67256231 is 13265276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67256231 - 2² = 67256227 is a prime.

It is a super-2 number, since 2×67256231² = 9046801216650722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67256237) 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 7 ways as a sum of consecutive naturals, for example, 5525 + ... + 12846.

It is an arithmetic number, because the mean of its divisors is an integer number (9626928).

Almost surely, 2^67256231 is an apocalyptic number.

67256231 is a deficient number, since it is larger than the sum of its proper divisors (9759193).

67256231 is a wasteful number, since it uses less digits than its factorization.

67256231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18901.

The product of its digits is 15120, while the sum is 32.

The square root of 67256231 is about 8200.9896354038. The cubic root of 67256231 is about 406.6719098879.

The spelling of 67256231 in words is "sixty-seven million, two hundred fifty-six thousand, two hundred thirty-one".