3696881663 has 2 divisors, whose sum is σ = 3696881664. Its totient is φ = 3696881662.

The previous prime is 3696881653. The next prime is 3696881687. The reversal of 3696881663 is 3661886963.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3696881663 - 2⁸ = 3696881407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3696881599 and 3696881608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3696881653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1848440831 + 1848440832.

It is an arithmetic number, because the mean of its divisors is an integer number (1848440832).

Almost surely, 2^3696881663 is an apocalyptic number.

3696881663 is a deficient number, since it is larger than the sum of its proper divisors (1).

3696881663 is an equidigital number, since it uses as much as digits as its factorization.

3696881663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6718464, while the sum is 56.

The square root of 3696881663 is about 60801.9873277182. The cubic root of 3696881663 is about 1546.2457407790.

The spelling of 3696881663 in words is "three billion, six hundred ninety-six million, eight hundred eighty-one thousand, six hundred sixty-three".