76436281 has 2 divisors, whose sum is σ = 76436282. Its totient is φ = 76436280.

The previous prime is 76436219. The next prime is 76436303. The reversal of 76436281 is 18263467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48441600 + 27994681 = 6960^2 + 5291^2 .

It is an emirp because it is prime and its reverse (18263467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76436281 - 2⁹ = 76435769 is a prime.

It is a super-2 number, since 2×76436281² = 11685010106221922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 76436281.

It is not a weakly prime, because it can be changed into another prime (76436201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38218140 + 38218141.

It is an arithmetic number, because the mean of its divisors is an integer number (38218141).

Almost surely, 2^76436281 is an apocalyptic number.

It is an amenable number.

76436281 is a deficient number, since it is larger than the sum of its proper divisors (1).

76436281 is an equidigital number, since it uses as much as digits as its factorization.

76436281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 76436281 is about 8742.7845106694. The cubic root of 76436281 is about 424.3913428086.

It can be divided in two parts, 7643 and 6281, that added together give a square (13924 = 118²).

The spelling of 76436281 in words is "seventy-six million, four hundred thirty-six thousand, two hundred eighty-one".