76221373 has 2 divisors, whose sum is σ = 76221374. Its totient is φ = 76221372.

The previous prime is 76221349. The next prime is 76221377. The reversal of 76221373 is 37312267.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41434969 + 34786404 = 6437^2 + 5898^2 .

It is a cyclic number.

It is not a de Polignac number, because 76221373 - 2²¹ = 74124221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76221377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38110686 + 38110687.

It is an arithmetic number, because the mean of its divisors is an integer number (38110687).

Almost surely, 2^76221373 is an apocalyptic number.

It is an amenable number.

76221373 is a deficient number, since it is larger than the sum of its proper divisors (1).

76221373 is an equidigital number, since it uses as much as digits as its factorization.

76221373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 31.

The square root of 76221373 is about 8730.4852671544. The cubic root of 76221373 is about 423.9932303565.

The spelling of 76221373 in words is "seventy-six million, two hundred twenty-one thousand, three hundred seventy-three".