75726689 has 2 divisors, whose sum is σ = 75726690. Its totient is φ = 75726688.

The previous prime is 75726667. The next prime is 75726697. The reversal of 75726689 is 98662757.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40857664 + 34869025 = 6392^2 + 5905^2 .

It is a cyclic number.

It is not a de Polignac number, because 75726689 - 2¹⁶ = 75661153 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75726659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37863344 + 37863345.

It is an arithmetic number, because the mean of its divisors is an integer number (37863345).

Almost surely, 2^75726689 is an apocalyptic number.

It is an amenable number.

75726689 is a deficient number, since it is larger than the sum of its proper divisors (1).

75726689 is an equidigital number, since it uses as much as digits as its factorization.

75726689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 50.

The square root of 75726689 is about 8702.1083077608. The cubic root of 75726689 is about 423.0739866149.

The spelling of 75726689 in words is "seventy-five million, seven hundred twenty-six thousand, six hundred eighty-nine".