646106140703 has 2 divisors, whose sum is σ = 646106140704. Its totient is φ = 646106140702.

The previous prime is 646106140681. The next prime is 646106140727. The reversal of 646106140703 is 307041601646.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 646106140703 - 2¹⁸ = 646105878559 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (646106140793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323053070351 + 323053070352.

It is an arithmetic number, because the mean of its divisors is an integer number (323053070352).

Almost surely, 2^646106140703 is an apocalyptic number.

646106140703 is a deficient number, since it is larger than the sum of its proper divisors (1).

646106140703 is an equidigital number, since it uses as much as digits as its factorization.

646106140703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 646106140703 in words is "six hundred forty-six billion, one hundred six million, one hundred forty thousand, seven hundred three".