669070013089 has 9 divisors (see below), whose sum is σ = 673654643571. Its totient is φ = 664516390800.

The previous prime is 669070012993. The next prime is 669070013107. The reversal of 669070013089 is 980310070966.

The square root of 669070013089 is 817967.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 54426557025 + 614643456064 = 233295^2 + 783992^2 .

It is not a de Polignac number, because 669070013089 - 2⁹ = 669070012577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669070014089) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 123510309 + ... + 123515725.

Almost surely, 2^669070013089 is an apocalyptic number.

669070013089 is the 817967-th square number.

669070013089 is the 408984-th centered octagonal number.

It is an amenable number.

669070013089 is a deficient number, since it is larger than the sum of its proper divisors (4584630482).

669070013089 is an frugal number, since it uses more digits than its factorization.

669070013089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11136 (or 5568 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 49.

Multiplying 669070013089 by its sum of digits (49), we get a square (32784430641361 = 5725769²).

The spelling of 669070013089 in words is "six hundred sixty-nine billion, seventy million, thirteen thousand, eighty-nine".