669279000 has 192 divisors, whose sum is σ = 2266074720. Its totient is φ = 163488000.

The previous prime is 669278969. The next prime is 669279019. The reversal of 669279000 is 972966.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 669279000.

It is a congruent number.

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, 5108935 + ... + 5109065.

Almost surely, 2^669279000 is an apocalyptic number.

669279000 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 669279000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1133037360).

669279000 is an abundant number, since it is smaller than the sum of its proper divisors (1596795720).

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

669279000 is a wasteful number, since it uses less digits than its factorization.

669279000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 669279000 is about 25870.4271321523. The cubic root of 669279000 is about 874.7200192654.

The spelling of 669279000 in words is "six hundred sixty-nine million, two hundred seventy-nine thousand".