75690617 has 2 divisors, whose sum is σ = 75690618. Its totient is φ = 75690616.

The previous prime is 75690607. The next prime is 75690619. The reversal of 75690617 is 71609657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74978281 + 712336 = 8659^2 + 844^2 .

It is a cyclic number.

It is not a de Polignac number, because 75690617 - 2¹² = 75686521 is a prime.

Together with 75690619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75690619) 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, 37845308 + 37845309.

It is an arithmetic number, because the mean of its divisors is an integer number (37845309).

Almost surely, 2^75690617 is an apocalyptic number.

It is an amenable number.

75690617 is a deficient number, since it is larger than the sum of its proper divisors (1).

75690617 is an equidigital number, since it uses as much as digits as its factorization.

75690617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 75690617 is about 8700.0354596979. The cubic root of 75690617 is about 423.0067996083.

The spelling of 75690617 in words is "seventy-five million, six hundred ninety thousand, six hundred seventeen".