669270913 has 4 divisors (see below), whose sum is σ = 669389760. Its totient is φ = 669152068.

The previous prime is 669270883. The next prime is 669270949. The reversal of 669270913 is 319072966.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 669270913 - 2⁵ = 669270881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 669270913.

It is not an unprimeable number, because it can be changed into a prime (669274913) 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 in 3 ways as a sum of consecutive naturals, for example, 50533 + ... + 62386.

It is an arithmetic number, because the mean of its divisors is an integer number (167347440).

Almost surely, 2^669270913 is an apocalyptic number.

It is an amenable number.

669270913 is a deficient number, since it is larger than the sum of its proper divisors (118847).

669270913 is a wasteful number, since it uses less digits than its factorization.

669270913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118846.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 669270913 is about 25870.2708335263. The cubic root of 669270913 is about 874.7164961262.

The spelling of 669270913 in words is "six hundred sixty-nine million, two hundred seventy thousand, nine hundred thirteen".