171002639 has 2 divisors, whose sum is σ = 171002640. Its totient is φ = 171002638.

The previous prime is 171002633. The next prime is 171002653. The reversal of 171002639 is 936200171.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 171002639 - 2¹² = 170998543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171002633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85501319 + 85501320.

It is an arithmetic number, because the mean of its divisors is an integer number (85501320).

Almost surely, 2^171002639 is an apocalyptic number.

171002639 is a deficient number, since it is larger than the sum of its proper divisors (1).

171002639 is an equidigital number, since it uses as much as digits as its factorization.

171002639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 171002639 is about 13076.7977349197. The cubic root of 171002639 is about 555.0527655917.

The spelling of 171002639 in words is "one hundred seventy-one million, two thousand, six hundred thirty-nine".