75986137 has 2 divisors, whose sum is σ = 75986138. Its totient is φ = 75986136.

The previous prime is 75986129. The next prime is 75986173. The reversal of 75986137 is 73168957.

Together with next prime (75986173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58920976 + 17065161 = 7676^2 + 4131^2 .

It is a cyclic number.

It is not a de Polignac number, because 75986137 - 2³ = 75986129 is a prime.

It is not a weakly prime, because it can be changed into another prime (75986237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37993068 + 37993069.

It is an arithmetic number, because the mean of its divisors is an integer number (37993069).

Almost surely, 2^75986137 is an apocalyptic number.

It is an amenable number.

75986137 is a deficient number, since it is larger than the sum of its proper divisors (1).

75986137 is an equidigital number, since it uses as much as digits as its factorization.

75986137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 46.

The square root of 75986137 is about 8717.0027532404. The cubic root of 75986137 is about 423.5566019373.

The spelling of 75986137 in words is "seventy-five million, nine hundred eighty-six thousand, one hundred thirty-seven".