669060 has 120 divisors (see below), whose sum is σ = 2439360. Its totient is φ = 150336.

The previous prime is 669049. The next prime is 669077. The reversal of 669060 is 60966.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 11311 + ... + 11369.

It is an arithmetic number, because the mean of its divisors is an integer number (20328).

2⁶⁶⁹⁰⁶⁰ is an apocalyptic number.

669060 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 669060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1219680).

669060 is an abundant number, since it is smaller than the sum of its proper divisors (1770300).

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

669060 is a wasteful number, since it uses less digits than its factorization.

669060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 669060 is about 817.9608792601. The cubic root of 669060 is about 87.4624600871.

The spelling of 669060 in words is "six hundred sixty-nine thousand, sixty".