669800448 has 96 divisors (see below), whose sum is σ = 1984273200. Its totient is φ = 223248384.

The previous prime is 669800447. The next prime is 669800449. The reversal of 669800448 is 844008966.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (669800447) and next prime (669800449).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669800441) 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, 49240 + ... + 61352.

Almost surely, 2^669800448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669800448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (992136600).

669800448 is an abundant number, since it is smaller than the sum of its proper divisors (1314472752).

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

669800448 is a wasteful number, since it uses less digits than its factorization.

669800448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12144 (or 12118 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 669800448 is about 25880.5032408568. The cubic root of 669800448 is about 874.9471306287.

The spelling of 669800448 in words is "six hundred sixty-nine million, eight hundred thousand, four hundred forty-eight".