3680406643 has 2 divisors, whose sum is σ = 3680406644. Its totient is φ = 3680406642.

The previous prime is 3680406629. The next prime is 3680406683. The reversal of 3680406643 is 3466040863.

It is an a-pointer prime, because the next prime (3680406683) can be obtained adding 3680406643 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3680406643 - 2²¹ = 3678309491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3680406596 and 3680406605.

It is not a weakly prime, because it can be changed into another prime (3680406683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1840203321 + 1840203322.

It is an arithmetic number, because the mean of its divisors is an integer number (1840203322).

Almost surely, 2^3680406643 is an apocalyptic number.

3680406643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3680406643 is an equidigital number, since it uses as much as digits as its factorization.

3680406643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 40.

The square root of 3680406643 is about 60666.3551155004. The cubic root of 3680406643 is about 1543.9453907581.

The spelling of 3680406643 in words is "three billion, six hundred eighty million, four hundred six thousand, six hundred forty-three".