3665720063 has 2 divisors, whose sum is σ = 3665720064. Its totient is φ = 3665720062.

The previous prime is 3665720053. The next prime is 3665720077. The reversal of 3665720063 is 3600275663.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3665720063 - 2²² = 3661525759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3665719999 and 3665720026.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3665720033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1832860031 + 1832860032.

It is an arithmetic number, because the mean of its divisors is an integer number (1832860032).

Almost surely, 2^3665720063 is an apocalyptic number.

3665720063 is a deficient number, since it is larger than the sum of its proper divisors (1).

3665720063 is an equidigital number, since it uses as much as digits as its factorization.

3665720063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 38.

The square root of 3665720063 is about 60545.1902548832. The cubic root of 3665720063 is about 1541.8889598187. Note that the first 3 decimals are identical.

The spelling of 3665720063 in words is "three billion, six hundred sixty-five million, seven hundred twenty thousand, sixty-three".