669192480 has 288 divisors, whose sum is σ = 2526189120. Its totient is φ = 159959040.

The previous prime is 669192479. The next prime is 669192499. The reversal of 669192480 is 84291966.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1314466 + ... + 1314974.

It is an arithmetic number, because the mean of its divisors is an integer number (8771490).

Almost surely, 2^669192480 is an apocalyptic number.

669192480 is a gapful number since it is divisible by the number (60) 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 669192480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1263094560).

669192480 is an abundant number, since it is smaller than the sum of its proper divisors (1856996640).

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

669192480 is a wasteful number, since it uses less digits than its factorization.

669192480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 669192480 is about 25868.7548985258. The cubic root of 669192480 is about 874.6823249519.

The spelling of 669192480 in words is "six hundred sixty-nine million, one hundred ninety-two thousand, four hundred eighty".