75650389 has 2 divisors, whose sum is σ = 75650390. Its totient is φ = 75650388.

The previous prime is 75650387. The next prime is 75650417. The reversal of 75650389 is 98305657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49210225 + 26440164 = 7015^2 + 5142^2 .

It is a cyclic number.

It is not a de Polignac number, because 75650389 - 2¹ = 75650387 is a prime.

Together with 75650387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75650383) 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, 37825194 + 37825195.

It is an arithmetic number, because the mean of its divisors is an integer number (37825195).

Almost surely, 2^75650389 is an apocalyptic number.

It is an amenable number.

75650389 is a deficient number, since it is larger than the sum of its proper divisors (1).

75650389 is an equidigital number, since it uses as much as digits as its factorization.

75650389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 75650389 is about 8697.7232078286. The cubic root of 75650389 is about 422.9318465349.

The spelling of 75650389 in words is "seventy-five million, six hundred fifty thousand, three hundred eighty-nine".