76221113 has 4 divisors (see below), whose sum is σ = 77077620. Its totient is φ = 75364608.

The previous prime is 76221109. The next prime is 76221121. The reversal of 76221113 is 31112267.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31112267 = 167 ⋅186301.

It can be written as a sum of positive squares in 2 ways, for example, as 9504889 + 66716224 = 3083^2 + 8168^2 .

It is a cyclic number.

It is not a de Polignac number, because 76221113 - 2² = 76221109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76221713) 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, 428120 + ... + 428297.

It is an arithmetic number, because the mean of its divisors is an integer number (19269405).

Almost surely, 2^76221113 is an apocalyptic number.

It is an amenable number.

76221113 is a deficient number, since it is larger than the sum of its proper divisors (856507).

76221113 is an equidigital number, since it uses as much as digits as its factorization.

76221113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856506.

The product of its digits is 504, while the sum is 23.

The square root of 76221113 is about 8730.4703767896. The cubic root of 76221113 is about 423.9927482591.

The spelling of 76221113 in words is "seventy-six million, two hundred twenty-one thousand, one hundred thirteen".