646410007 has 2 divisors, whose sum is σ = 646410008. Its totient is φ = 646410006.

The previous prime is 646409957. The next prime is 646410019. The reversal of 646410007 is 700014646.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 646410007 - 2⁷ = 646409879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (646410097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323205003 + 323205004.

It is an arithmetic number, because the mean of its divisors is an integer number (323205004).

Almost surely, 2^646410007 is an apocalyptic number.

646410007 is a deficient number, since it is larger than the sum of its proper divisors (1).

646410007 is an equidigital number, since it uses as much as digits as its factorization.

646410007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 646410007 is about 25424.5945297069. The cubic root of 646410007 is about 864.6413950062.

It can be divided in two parts, 6464 and 10007, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 646410007 in words is "six hundred forty-six million, four hundred ten thousand, seven".