76614221 has 4 divisors (see below), whose sum is σ = 76634844. Its totient is φ = 76593600.

The previous prime is 76614211. The next prime is 76614227. The reversal of 76614221 is 12241667.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12241667 = 47 ⋅260461.

It can be written as a sum of positive squares in 2 ways, for example, as 61011721 + 15602500 = 7811^2 + 3950^2 .

It is a cyclic number.

It is not a de Polignac number, because 76614221 - 2¹⁰ = 76613197 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 (76614227) 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, 3020 + ... + 12741.

It is an arithmetic number, because the mean of its divisors is an integer number (19158711).

Almost surely, 2^76614221 is an apocalyptic number.

It is an amenable number.

76614221 is a deficient number, since it is larger than the sum of its proper divisors (20623).

76614221 is a wasteful number, since it uses less digits than its factorization.

76614221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20622.

The product of its digits is 4032, while the sum is 29.

The square root of 76614221 is about 8752.9549867459. The cubic root of 76614221 is about 424.7204084951.

Adding to 76614221 its reverse (12241667), we get a palindrome (88855888).

The spelling of 76614221 in words is "seventy-six million, six hundred fourteen thousand, two hundred twenty-one".