75678013 has 2 divisors, whose sum is σ = 75678014. Its totient is φ = 75678012.

The previous prime is 75677993. The next prime is 75678089. The reversal of 75678013 is 31087657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51451929 + 24226084 = 7173^2 + 4922^2 .

It is a cyclic number.

It is not a de Polignac number, because 75678013 - 2¹³ = 75669821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75678913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37839006 + 37839007.

It is an arithmetic number, because the mean of its divisors is an integer number (37839007).

Almost surely, 2^75678013 is an apocalyptic number.

It is an amenable number.

75678013 is a deficient number, since it is larger than the sum of its proper divisors (1).

75678013 is an equidigital number, since it uses as much as digits as its factorization.

75678013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 75678013 is about 8699.3110646763. The cubic root of 75678013 is about 422.9833186103.

The spelling of 75678013 in words is "seventy-five million, six hundred seventy-eight thousand, thirteen".