75840931 has 2 divisors, whose sum is σ = 75840932. Its totient is φ = 75840930.

The previous prime is 75840929. The next prime is 75840937. The reversal of 75840931 is 13904857.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75840931 - 2¹ = 75840929 is a prime.

It is a super-2 number, since 2×75840931² = 11503693629893522, which contains 22 as substring.

Together with 75840929, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (75840937) 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, 37920465 + 37920466.

It is an arithmetic number, because the mean of its divisors is an integer number (37920466).

Almost surely, 2^75840931 is an apocalyptic number.

75840931 is a deficient number, since it is larger than the sum of its proper divisors (1).

75840931 is an equidigital number, since it uses as much as digits as its factorization.

75840931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 75840931 is about 8708.6698754747. The cubic root of 75840931 is about 423.2866308590.

The spelling of 75840931 in words is "seventy-five million, eight hundred forty thousand, nine hundred thirty-one".