660354 has 8 divisors (see below), whose sum is σ = 1320720. Its totient is φ = 220116.

The previous prime is 660349. The next prime is 660367. The reversal of 660354 is 453066.

It is a sphenic number, since it is the product of 3 distinct primes.

660354 is an admirable number.

It is a d-powerful number, because it can be written as 6² + 6⁶ + 3¹² + 0 + 5⁷ + 4⁶ .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55024 + ... + 55035.

It is an arithmetic number, because the mean of its divisors is an integer number (165090).

2⁶⁶⁰³⁵⁴ is an apocalyptic number.

660354 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

660354 is a wasteful number, since it uses less digits than its factorization.

660354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110064.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 660354 is about 812.6216831958. The cubic root of 660354 is about 87.0814404529.

The spelling of 660354 in words is "six hundred sixty thousand, three hundred fifty-four".