75726641 has 2 divisors, whose sum is σ = 75726642. Its totient is φ = 75726640.

The previous prime is 75726617. The next prime is 75726643. The reversal of 75726641 is 14662757.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47679025 + 28047616 = 6905^2 + 5296^2 .

It is an emirp because it is prime and its reverse (14662757) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75726641 is a prime.

Together with 75726643, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 75726595 and 75726604.

It is not a weakly prime, because it can be changed into another prime (75726643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37863320 + 37863321.

It is an arithmetic number, because the mean of its divisors is an integer number (37863321).

Almost surely, 2^75726641 is an apocalyptic number.

It is an amenable number.

75726641 is a deficient number, since it is larger than the sum of its proper divisors (1).

75726641 is an equidigital number, since it uses as much as digits as its factorization.

75726641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 38.

The square root of 75726641 is about 8702.1055498080. The cubic root of 75726641 is about 423.0738972252.

It can be divided in two parts, 75726 and 641, that added together give a palindrome (76367).

The spelling of 75726641 in words is "seventy-five million, seven hundred twenty-six thousand, six hundred forty-one".