75069689 has 2 divisors, whose sum is σ = 75069690. Its totient is φ = 75069688.

The previous prime is 75069641. The next prime is 75069691. The reversal of 75069689 is 98696057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70425664 + 4644025 = 8392^2 + 2155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75069689 is a prime.

Together with 75069691, 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 (75069089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37534844 + 37534845.

It is an arithmetic number, because the mean of its divisors is an integer number (37534845).

Almost surely, 2^75069689 is an apocalyptic number.

It is an amenable number.

75069689 is a deficient number, since it is larger than the sum of its proper divisors (1).

75069689 is an equidigital number, since it uses as much as digits as its factorization.

75069689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 75069689 is about 8664.2765999245. The cubic root of 75069689 is about 421.8469099468.

The spelling of 75069689 in words is "seventy-five million, sixty-nine thousand, six hundred eighty-nine".