6440601683 has 2 divisors, whose sum is σ = 6440601684. Its totient is φ = 6440601682.

The previous prime is 6440601599. The next prime is 6440601697. The reversal of 6440601683 is 3861060446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6440601683 - 2¹⁶ = 6440536147 is a prime.

It is not a weakly prime, because it can be changed into another prime (6440601383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3220300841 + 3220300842.

It is an arithmetic number, because the mean of its divisors is an integer number (3220300842).

Almost surely, 2^6440601683 is an apocalyptic number.

6440601683 is a deficient number, since it is larger than the sum of its proper divisors (1).

6440601683 is an equidigital number, since it uses as much as digits as its factorization.

6440601683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 6440601683 is about 80253.3593253267. The cubic root of 6440601683 is about 1860.5534333199.

The spelling of 6440601683 in words is "six billion, four hundred forty million, six hundred one thousand, six hundred eighty-three".