3996780757 has 2 divisors, whose sum is σ = 3996780758. Its totient is φ = 3996780756.

The previous prime is 3996780713. The next prime is 3996780833. The reversal of 3996780757 is 7570876993.

3996780757 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2933955556 + 1062825201 = 54166^2 + 32601^2 .

It is an emirp because it is prime and its reverse (7570876993) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3996780757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3996780695 and 3996780704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3996780707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998390378 + 1998390379.

It is an arithmetic number, because the mean of its divisors is an integer number (1998390379).

Almost surely, 2^3996780757 is an apocalyptic number.

It is an amenable number.

3996780757 is a deficient number, since it is larger than the sum of its proper divisors (1).

3996780757 is an equidigital number, since it uses as much as digits as its factorization.

3996780757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20003760, while the sum is 61.

The square root of 3996780757 is about 63220.0977300731. The cubic root of 3996780757 is about 1586.9750851965.

The spelling of 3996780757 in words is "three billion, nine hundred ninety-six million, seven hundred eighty thousand, seven hundred fifty-seven".