669206160 has 360 divisors, whose sum is σ = 2695702464. Its totient is φ = 145728000.

The previous prime is 669206159. The next prime is 669206177. The reversal of 669206160 is 61602966.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2666035 + ... + 2666285.

Almost surely, 2^669206160 is an apocalyptic number.

669206160 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 669206160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1347851232).

669206160 is an abundant number, since it is smaller than the sum of its proper divisors (2026496304).

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

669206160 is a wasteful number, since it uses less digits than its factorization.

669206160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 669206160 is about 25869.0193088180. The cubic root of 669206160 is about 874.6882851566.

The spelling of 669206160 in words is "six hundred sixty-nine million, two hundred six thousand, one hundred sixty".