740066740681 has 2 divisors, whose sum is σ = 740066740682. Its totient is φ = 740066740680.

The previous prime is 740066740639. The next prime is 740066740697. The reversal of 740066740681 is 186047660047.

740066740681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 704775361081 + 35291379600 = 839509^2 + 187860^2 .

It is a cyclic number.

It is not a de Polignac number, because 740066740681 - 2³⁵ = 705707002313 is a prime.

It is a super-2 number, since 2×740066740681² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (740066710681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370033370340 + 370033370341.

It is an arithmetic number, because the mean of its divisors is an integer number (370033370341).

Almost surely, 2^740066740681 is an apocalyptic number.

It is an amenable number.

740066740681 is a deficient number, since it is larger than the sum of its proper divisors (1).

740066740681 is an equidigital number, since it uses as much as digits as its factorization.

740066740681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 740066740681 in words is "seven hundred forty billion, sixty-six million, seven hundred forty thousand, six hundred eighty-one".