75661093 has 2 divisors, whose sum is σ = 75661094. Its totient is φ = 75661092.

The previous prime is 75661073. The next prime is 75661109. The reversal of 75661093 is 39016657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65561409 + 10099684 = 8097^2 + 3178^2 .

It is an emirp because it is prime and its reverse (39016657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75661093 - 2⁹ = 75660581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75661043) 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, 37830546 + 37830547.

It is an arithmetic number, because the mean of its divisors is an integer number (37830547).

Almost surely, 2^75661093 is an apocalyptic number.

It is an amenable number.

75661093 is a deficient number, since it is larger than the sum of its proper divisors (1).

75661093 is an equidigital number, since it uses as much as digits as its factorization.

75661093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 75661093 is about 8698.3385195105. The cubic root of 75661093 is about 422.9517928919.

The spelling of 75661093 in words is "seventy-five million, six hundred sixty-one thousand, ninety-three".