75869 has 2 divisors, whose sum is σ = 75870. Its totient is φ = 75868.

The previous prime is 75853. The next prime is 75883. The reversal of 75869 is 96857.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68644 + 7225 = 262^2 + 85^2 .

It is an emirp because it is prime and its reverse (96857) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75869 - 2⁴ = 75853 is a prime.

It is a super-2 number, since 2×75869² = 11512210322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37934 + 37935.

It is an arithmetic number, because the mean of its divisors is an integer number (37935).

2⁷⁵⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

75869 is a deficient number, since it is larger than the sum of its proper divisors (1).

75869 is an equidigital number, since it uses as much as digits as its factorization.

75869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 75869 is about 275.4432790975. The cubic root of 75869 is about 42.3338844384. Note that the first 3 decimals are identical.

The spelling of 75869 in words is "seventy-five thousand, eight hundred sixty-nine".