76506449 has 2 divisors, whose sum is σ = 76506450. Its totient is φ = 76506448.

The previous prime is 76506433. The next prime is 76506473. The reversal of 76506449 is 94460567.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73017025 + 3489424 = 8545^2 + 1868^2 .

It is an emirp because it is prime and its reverse (94460567) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76506449 - 2⁴ = 76506433 is a prime.

It is not a weakly prime, because it can be changed into another prime (76506949) 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, 38253224 + 38253225.

It is an arithmetic number, because the mean of its divisors is an integer number (38253225).

Almost surely, 2^76506449 is an apocalyptic number.

It is an amenable number.

76506449 is a deficient number, since it is larger than the sum of its proper divisors (1).

76506449 is an equidigital number, since it uses as much as digits as its factorization.

76506449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 76506449 is about 8746.7964992905. The cubic root of 76506449 is about 424.5211659056.

The spelling of 76506449 in words is "seventy-six million, five hundred six thousand, four hundred forty-nine".