76642271 has 2 divisors, whose sum is σ = 76642272. Its totient is φ = 76642270.

The previous prime is 76642231. The next prime is 76642277. The reversal of 76642271 is 17224667.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76642271 - 2¹⁸ = 76380127 is a prime.

It is equal to p_4484852 and since 76642271 and 4484852 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76642277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38321135 + 38321136.

It is an arithmetic number, because the mean of its divisors is an integer number (38321136).

Almost surely, 2^76642271 is an apocalyptic number.

76642271 is a deficient number, since it is larger than the sum of its proper divisors (1).

76642271 is an equidigital number, since it uses as much as digits as its factorization.

76642271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 35.

The square root of 76642271 is about 8754.5571561330. The cubic root of 76642271 is about 424.7722350520.

The spelling of 76642271 in words is "seventy-six million, six hundred forty-two thousand, two hundred seventy-one".