669962280 has 64 divisors (see below), whose sum is σ = 2164498560. Its totient is φ = 164913408.

The previous prime is 669962257. The next prime is 669962291. The reversal of 669962280 is 82269966.

669962280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213172 + ... + 216291.

It is an arithmetic number, because the mean of its divisors is an integer number (33820290).

Almost surely, 2^669962280 is an apocalyptic number.

669962280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

669962280 is an abundant number, since it is smaller than the sum of its proper divisors (1494536280).

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

669962280 is a wasteful number, since it uses less digits than its factorization.

669962280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429490 (or 429486 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 669962280 is about 25883.6295754672. The cubic root of 669962280 is about 875.0175909389.

The spelling of 669962280 in words is "six hundred sixty-nine million, nine hundred sixty-two thousand, two hundred eighty".