669360 has 40 divisors (see below), whose sum is σ = 2075760. Its totient is φ = 178432.

The previous prime is 669359. The next prime is 669371. The reversal of 669360 is 63966.

669360 = T₁₅ + T₁₆ + ... + T₁₅₈.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1155 + ... + 1634.

It is an arithmetic number, because the mean of its divisors is an integer number (51894).

2⁶⁶⁹³⁶⁰ is an apocalyptic number.

669360 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

669360 is an abundant number, since it is smaller than the sum of its proper divisors (1406400).

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

669360 is a wasteful number, since it uses less digits than its factorization.

669360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805 (or 2799 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 669360 is about 818.1442415614. The cubic root of 669360 is about 87.4755305727.

The spelling of 669360 in words is "six hundred sixty-nine thousand, three hundred sixty".