67997227 has 4 divisors (see below), whose sum is σ = 68022136. Its totient is φ = 67972320.

The previous prime is 67997221. The next prime is 67997239. The reversal of 67997227 is 72279976.

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 67997227 - 2¹⁵ = 67964459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67997221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7773 + ... + 14014.

It is an arithmetic number, because the mean of its divisors is an integer number (17005534).

Almost surely, 2^67997227 is an apocalyptic number.

67997227 is a deficient number, since it is larger than the sum of its proper divisors (24909).

67997227 is a wasteful number, since it uses less digits than its factorization.

67997227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24908.

The product of its digits is 666792, while the sum is 49.

The square root of 67997227 is about 8246.0431116991. The cubic root of 67997227 is about 408.1599618665.

The spelling of 67997227 in words is "sixty-seven million, nine hundred ninety-seven thousand, two hundred twenty-seven".