76474649 has 2 divisors, whose sum is σ = 76474650. Its totient is φ = 76474648.

The previous prime is 76474637. The next prime is 76474667. The reversal of 76474649 is 94647467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69222400 + 7252249 = 8320^2 + 2693^2 .

It is an emirp because it is prime and its reverse (94647467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76474649 - 2⁸ = 76474393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76474049) 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, 38237324 + 38237325.

It is an arithmetic number, because the mean of its divisors is an integer number (38237325).

Almost surely, 2^76474649 is an apocalyptic number.

It is an amenable number.

76474649 is a deficient number, since it is larger than the sum of its proper divisors (1).

76474649 is an equidigital number, since it uses as much as digits as its factorization.

76474649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 47.

The square root of 76474649 is about 8744.9785019747. The cubic root of 76474649 is about 424.4623401723.

The spelling of 76474649 in words is "seventy-six million, four hundred seventy-four thousand, six hundred forty-nine".