6970171639 has 2 divisors, whose sum is σ = 6970171640. Its totient is φ = 6970171638.

The previous prime is 6970171633. The next prime is 6970171673. The reversal of 6970171639 is 9361710796.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6970171639 - 2⁹ = 6970171127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6970171592 and 6970171601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6970171633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3485085819 + 3485085820.

It is an arithmetic number, because the mean of its divisors is an integer number (3485085820).

Almost surely, 2^6970171639 is an apocalyptic number.

6970171639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6970171639 is an equidigital number, since it uses as much as digits as its factorization.

6970171639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 6970171639 is about 83487.5537969583. The cubic root of 6970171639 is about 1910.2101903127.

The spelling of 6970171639 in words is "six billion, nine hundred seventy million, one hundred seventy-one thousand, six hundred thirty-nine".