669147141 has 16 divisors (see below), whose sum is σ = 961309440. Its totient is φ = 411576000.

The previous prime is 669147137. The next prime is 669147161. The reversal of 669147141 is 141741966.

It is not a de Polignac number, because 669147141 - 2² = 669147137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 669147141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669147161) 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, 118891 + ... + 124391.

It is an arithmetic number, because the mean of its divisors is an integer number (60081840).

Almost surely, 2^669147141 is an apocalyptic number.

It is an amenable number.

669147141 is a deficient number, since it is larger than the sum of its proper divisors (292162299).

669147141 is a wasteful number, since it uses less digits than its factorization.

669147141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8636.

The product of its digits is 36288, while the sum is 39.

The square root of 669147141 is about 25867.8785562326. The cubic root of 669147141 is about 874.6625707363.

The spelling of 669147141 in words is "six hundred sixty-nine million, one hundred forty-seven thousand, one hundred forty-one".