75728867 has 2 divisors, whose sum is σ = 75728868. Its totient is φ = 75728866.

The previous prime is 75728839. The next prime is 75728879. The reversal of 75728867 is 76882757.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75728867 is a prime.

It is a super-2 number, since 2×75728867² = 11469722594207378, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75728837) 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, 37864433 + 37864434.

It is an arithmetic number, because the mean of its divisors is an integer number (37864434).

Almost surely, 2^75728867 is an apocalyptic number.

75728867 is a deficient number, since it is larger than the sum of its proper divisors (1).

75728867 is an equidigital number, since it uses as much as digits as its factorization.

75728867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1317120, while the sum is 50.

The square root of 75728867 is about 8702.2334489486. The cubic root of 75728867 is about 423.0780426323.

The spelling of 75728867 in words is "seventy-five million, seven hundred twenty-eight thousand, eight hundred sixty-seven".