76422581 has 2 divisors, whose sum is σ = 76422582. Its totient is φ = 76422580.

The previous prime is 76422557. The next prime is 76422587. The reversal of 76422581 is 18522467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64657681 + 11764900 = 8041^2 + 3430^2 .

It is a cyclic number.

It is not a de Polignac number, because 76422581 - 2¹⁰ = 76421557 is a prime.

It is a super-2 number, since 2×76422581² = 11680821773403122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76422587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38211290 + 38211291.

It is an arithmetic number, because the mean of its divisors is an integer number (38211291).

Almost surely, 2^76422581 is an apocalyptic number.

It is an amenable number.

76422581 is a deficient number, since it is larger than the sum of its proper divisors (1).

76422581 is an equidigital number, since it uses as much as digits as its factorization.

76422581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 35.

The square root of 76422581 is about 8742.0009723175. Note that the first 3 decimals coincide. The cubic root of 76422581 is about 424.3659861380.

The spelling of 76422581 in words is "seventy-six million, four hundred twenty-two thousand, five hundred eighty-one".