67226389 has 4 divisors (see below), whose sum is σ = 70764640. Its totient is φ = 63688140.

The previous prime is 67226371. The next prime is 67226407. The reversal of 67226389 is 98362276.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (67226371) and next prime (67226407).

It is a cyclic number.

It is not a de Polignac number, because 67226389 - 2⁹ = 67225877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67226189) 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, 1769097 + ... + 1769134.

It is an arithmetic number, because the mean of its divisors is an integer number (17691160).

Almost surely, 2^67226389 is an apocalyptic number.

It is an amenable number.

67226389 is a deficient number, since it is larger than the sum of its proper divisors (3538251).

67226389 is a wasteful number, since it uses less digits than its factorization.

67226389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3538250.

The product of its digits is 217728, while the sum is 43.

The square root of 67226389 is about 8199.1700189714. The cubic root of 67226389 is about 406.6117533873.

The spelling of 67226389 in words is "sixty-seven million, two hundred twenty-six thousand, three hundred eighty-nine".