78667226 has 8 divisors (see below), whose sum is σ = 128728224. Its totient is φ = 35757820.

The previous prime is 78667207. The next prime is 78667231. The reversal of 78667226 is 62276687.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1787870 + ... + 1787913.

It is an arithmetic number, because the mean of its divisors is an integer number (16091028).

Almost surely, 2^78667226 is an apocalyptic number.

78667226 is a deficient number, since it is larger than the sum of its proper divisors (50060998).

78667226 is a wasteful number, since it uses less digits than its factorization.

78667226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575796.

The product of its digits is 338688, while the sum is 44.

The square root of 78667226 is about 8869.4546619282. The cubic root of 78667226 is about 428.4807136994.

The spelling of 78667226 in words is "seventy-eight million, six hundred sixty-seven thousand, two hundred twenty-six".