669007193 has 4 divisors (see below), whose sum is σ = 671290788. Its totient is φ = 666723600.

The previous prime is 669007151. The next prime is 669007217. The reversal of 669007193 is 391700966.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 382280704 + 286726489 = 19552^2 + 16933^2 .

It is a cyclic number.

It is not a de Polignac number, because 669007193 - 2¹⁶ = 668941657 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 669007193.

It is not an unprimeable number, because it can be changed into a prime (669007123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141358 + ... + 1141943.

It is an arithmetic number, because the mean of its divisors is an integer number (167822697).

Almost surely, 2^669007193 is an apocalyptic number.

It is an amenable number.

669007193 is a deficient number, since it is larger than the sum of its proper divisors (2283595).

669007193 is a wasteful number, since it uses less digits than its factorization.

669007193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2283594.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 669007193 is about 25865.1733611047. The cubic root of 669007193 is about 874.6015897230.

The spelling of 669007193 in words is "six hundred sixty-nine million, seven thousand, one hundred ninety-three".