75740437 has 2 divisors, whose sum is σ = 75740438. Its totient is φ = 75740436.

The previous prime is 75740383. The next prime is 75740473. The reversal of 75740437 is 73404757.

Together with next prime (75740473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58384881 + 17355556 = 7641^2 + 4166^2 .

It is an emirp because it is prime and its reverse (73404757) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75740437 - 2⁷ = 75740309 is a prime.

It is a super-2 number, since 2×75740437² = 11473227593901938, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 75740396 and 75740405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75740237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37870218 + 37870219.

It is an arithmetic number, because the mean of its divisors is an integer number (37870219).

Almost surely, 2^75740437 is an apocalyptic number.

It is an amenable number.

75740437 is a deficient number, since it is larger than the sum of its proper divisors (1).

75740437 is an equidigital number, since it uses as much as digits as its factorization.

75740437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82320, while the sum is 37.

The square root of 75740437 is about 8702.8981954289. The cubic root of 75740437 is about 423.0995877572.

The spelling of 75740437 in words is "seventy-five million, seven hundred forty thousand, four hundred thirty-seven".