669241344 has 104 divisors (see below), whose sum is σ = 1804641120. Its totient is φ = 220561408.

The previous prime is 669241337. The next prime is 669241393. The reversal of 669241344 is 443142966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1314562 + ... + 1315070.

Almost surely, 2^669241344 is an apocalyptic number.

669241344 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669241344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (902320560).

669241344 is an abundant number, since it is smaller than the sum of its proper divisors (1135399776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669241344 is a wasteful number, since it uses less digits than its factorization.

669241344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643 (or 621 counting only the distinct ones).

The product of its digits is 124416, while the sum is 39.

The square root of 669241344 is about 25869.6993411211. The cubic root of 669241344 is about 874.7036140120.

The spelling of 669241344 in words is "six hundred sixty-nine million, two hundred forty-one thousand, three hundred forty-four".