75684971 has 2 divisors, whose sum is σ = 75684972. Its totient is φ = 75684970.

The previous prime is 75684967. The next prime is 75684979. The reversal of 75684971 is 17948657.

It is a weak prime.

It is an emirp because it is prime and its reverse (17948657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75684971 - 2² = 75684967 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (75684979) 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, 37842485 + 37842486.

It is an arithmetic number, because the mean of its divisors is an integer number (37842486).

Almost surely, 2^75684971 is an apocalyptic number.

75684971 is a deficient number, since it is larger than the sum of its proper divisors (1).

75684971 is an equidigital number, since it uses as much as digits as its factorization.

75684971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 47.

The square root of 75684971 is about 8699.7109722105. The cubic root of 75684971 is about 422.9962815464.

The spelling of 75684971 in words is "seventy-five million, six hundred eighty-four thousand, nine hundred seventy-one".