75899731 has 2 divisors, whose sum is σ = 75899732. Its totient is φ = 75899730.

The previous prime is 75899729. The next prime is 75899743. The reversal of 75899731 is 13799857.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75899731 - 2¹ = 75899729 is a prime.

It is a super-2 number, since 2×75899731² = 11521538331744722, which contains 22 as substring.

Together with 75899729, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (75899711) 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, 37949865 + 37949866.

It is an arithmetic number, because the mean of its divisors is an integer number (37949866).

Almost surely, 2^75899731 is an apocalyptic number.

75899731 is a deficient number, since it is larger than the sum of its proper divisors (1).

75899731 is an equidigital number, since it uses as much as digits as its factorization.

75899731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 49.

The square root of 75899731 is about 8712.0451674679. The cubic root of 75899731 is about 423.3959949542.

It can be divided in two parts, 758 and 99731, that added together give a square (100489 = 317²).

The spelling of 75899731 in words is "seventy-five million, eight hundred ninety-nine thousand, seven hundred thirty-one".