641006519 has 2 divisors, whose sum is σ = 641006520. Its totient is φ = 641006518.

The previous prime is 641006501. The next prime is 641006543. The reversal of 641006519 is 915600146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 641006519 - 2²⁸ = 372571063 is a prime.

It is a super-2 number, since 2×641006519² = 821778714800994722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (641006549) 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, 320503259 + 320503260.

It is an arithmetic number, because the mean of its divisors is an integer number (320503260).

Almost surely, 2^641006519 is an apocalyptic number.

641006519 is a deficient number, since it is larger than the sum of its proper divisors (1).

641006519 is an equidigital number, since it uses as much as digits as its factorization.

641006519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 641006519 is about 25318.1065445266. The cubic root of 641006519 is about 862.2254059425.

The spelling of 641006519 in words is "six hundred forty-one million, six thousand, five hundred nineteen".