6872437639 has 2 divisors, whose sum is σ = 6872437640. Its totient is φ = 6872437638.

The previous prime is 6872437631. The next prime is 6872437643. The reversal of 6872437639 is 9367342786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6872437639 - 2³ = 6872437631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6872437639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6872437631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3436218819 + 3436218820.

It is an arithmetic number, because the mean of its divisors is an integer number (3436218820).

Almost surely, 2^6872437639 is an apocalyptic number.

6872437639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6872437639 is an equidigital number, since it uses as much as digits as its factorization.

6872437639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9144576, while the sum is 55.

The square root of 6872437639 is about 82900.1667006768. The cubic root of 6872437639 is about 1901.2399698246.

The spelling of 6872437639 in words is "six billion, eight hundred seventy-two million, four hundred thirty-seven thousand, six hundred thirty-nine".