76227221 has 16 divisors (see below), whose sum is σ = 95692800. Its totient is φ = 59205168.

The previous prime is 76227209. The next prime is 76227271. The reversal of 76227221 is 12272267.

It is a cyclic number.

It is not a de Polignac number, because 76227221 - 2⁶ = 76227157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76227271) 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 15 ways as a sum of consecutive naturals, for example, 9401 + ... + 15518.

It is an arithmetic number, because the mean of its divisors is an integer number (5980800).

Almost surely, 2^76227221 is an apocalyptic number.

It is an amenable number.

76227221 is a deficient number, since it is larger than the sum of its proper divisors (19465579).

76227221 is a wasteful number, since it uses less digits than its factorization.

76227221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24968.

The product of its digits is 4704, while the sum is 29.

The square root of 76227221 is about 8730.8201791126. The cubic root of 76227221 is about 424.0040735487.

Adding to 76227221 its reverse (12272267), we get a palindrome (88499488).

The spelling of 76227221 in words is "seventy-six million, two hundred twenty-seven thousand, two hundred twenty-one".