669833280 has 112 divisors (see below), whose sum is σ = 2363053440. Its totient is φ = 178619904.

The previous prime is 669833279. The next prime is 669833287. The reversal of 669833280 is 82338966.

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

It is not an unprimeable number, because it can be changed into a prime (669833287) 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, 30124 + ... + 47403.

Almost surely, 2^669833280 is an apocalyptic number.

669833280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

669833280 is an abundant number, since it is smaller than the sum of its proper divisors (1693220160).

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

669833280 is a wasteful number, since it uses less digits than its factorization.

669833280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77553 (or 77537 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 669833280 is about 25881.1375329602. The cubic root of 669833280 is about 874.9614263267.

The spelling of 669833280 in words is "six hundred sixty-nine million, eight hundred thirty-three thousand, two hundred eighty".