67620847289 has 16 divisors (see below), whose sum is σ = 69205847760. Its totient is φ = 66056601600.

The previous prime is 67620847213. The next prime is 67620847291. The reversal of 67620847289 is 98274802676.

It can be written as a sum of positive squares in 8 ways, for example, as 231283264 + 67389564025 = 15208^2 + 259595^2 .

It is a cyclic number.

It is not a de Polignac number, because 67620847289 - 2⁸ = 67620847033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67620843289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5181917 + ... + 5194949.

It is an arithmetic number, because the mean of its divisors is an integer number (4325365485).

Almost surely, 2^67620847289 is an apocalyptic number.

It is an amenable number.

67620847289 is a deficient number, since it is larger than the sum of its proper divisors (1585000471).

67620847289 is a wasteful number, since it uses less digits than its factorization.

67620847289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13820.

The product of its (nonzero) digits is 16257024, while the sum is 59.

The spelling of 67620847289 in words is "sixty-seven billion, six hundred twenty million, eight hundred forty-seven thousand, two hundred eighty-nine".