75058661 has 2 divisors, whose sum is σ = 75058662. Its totient is φ = 75058660.

The previous prime is 75058639. The next prime is 75058733. The reversal of 75058661 is 16685057.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70728100 + 4330561 = 8410^2 + 2081^2 .

It is an emirp because it is prime and its reverse (16685057) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75058661 is a prime.

It is a super-2 number, since 2×75058661² = 11267605182225842, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75058261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37529330 + 37529331.

It is an arithmetic number, because the mean of its divisors is an integer number (37529331).

Almost surely, 2^75058661 is an apocalyptic number.

It is an amenable number.

75058661 is a deficient number, since it is larger than the sum of its proper divisors (1).

75058661 is an equidigital number, since it uses as much as digits as its factorization.

75058661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 75058661 is about 8663.6401702748. The cubic root of 75058661 is about 421.8262520061.

The spelling of 75058661 in words is "seventy-five million, fifty-eight thousand, six hundred sixty-one".