76701221 has 2 divisors, whose sum is σ = 76701222. Its totient is φ = 76701220.

The previous prime is 76701211. The next prime is 76701253. The reversal of 76701221 is 12210767.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56325025 + 20376196 = 7505^2 + 4514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76701221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76701211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38350610 + 38350611.

It is an arithmetic number, because the mean of its divisors is an integer number (38350611).

Almost surely, 2^76701221 is an apocalyptic number.

It is an amenable number.

76701221 is a deficient number, since it is larger than the sum of its proper divisors (1).

76701221 is an equidigital number, since it uses as much as digits as its factorization.

76701221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 76701221 is about 8757.9233269080. The cubic root of 76701221 is about 424.8811127670.

Adding to 76701221 its reverse (12210767), we get a palindrome (88911988).

The spelling of 76701221 in words is "seventy-six million, seven hundred one thousand, two hundred twenty-one".