146661 has 16 divisors (see below), whose sum is σ = 215040. Its totient is φ = 88560.

The previous prime is 146647. The next prime is 146669. The reversal of 146661 is 166641.

It is not a de Polignac number, because 146661 - 2¹⁰ = 145637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1726 + ... + 1808.

It is an arithmetic number, because the mean of its divisors is an integer number (13440).

2¹⁴⁶⁶⁶¹ is an apocalyptic number.

It is an amenable number.

146661 is a deficient number, since it is larger than the sum of its proper divisors (68379).

146661 is a wasteful number, since it uses less digits than its factorization.

146661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136.

The product of its digits is 864, while the sum is 24.

The square root of 146661 is about 382.9634447307. The cubic root of 146661 is about 52.7357201001.

The spelling of 146661 in words is "one hundred forty-six thousand, six hundred sixty-one".