660146 has 16 divisors (see below), whose sum is σ = 1050624. Its totient is φ = 310464.

The previous prime is 660137. The next prime is 660157. The reversal of 660146 is 641066.

660146 = T₂₂₈ + T₂₂₉ + ... + T₂₅₀.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

660146 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5135 + ... + 5261.

It is an arithmetic number, because the mean of its divisors is an integer number (65664).

2⁶⁶⁰¹⁴⁶ is an apocalyptic number.

660146 is a deficient number, since it is larger than the sum of its proper divisors (390478).

660146 is a wasteful number, since it uses less digits than its factorization.

660146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 660146 is about 812.4936922832. The cubic root of 660146 is about 87.0722964475.

The spelling of 660146 in words is "six hundred sixty thousand, one hundred forty-six".