669813141 has 8 divisors (see below), whose sum is σ = 945618624. Its totient is φ = 420274880.

The previous prime is 669813049. The next prime is 669813149. The reversal of 669813141 is 141318966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 669813141 - 2⁷ = 669813013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 669813141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669813149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6566745 + ... + 6566846.

It is an arithmetic number, because the mean of its divisors is an integer number (118202328).

Almost surely, 2^669813141 is an apocalyptic number.

It is an amenable number.

669813141 is a deficient number, since it is larger than the sum of its proper divisors (275805483).

669813141 is a wasteful number, since it uses less digits than its factorization.

669813141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13133611.

The product of its digits is 31104, while the sum is 39.

The square root of 669813141 is about 25880.7484629019. The cubic root of 669813141 is about 874.9526574658.

The spelling of 669813141 in words is "six hundred sixty-nine million, eight hundred thirteen thousand, one hundred forty-one".