146866 has 4 divisors (see below), whose sum is σ = 220302. Its totient is φ = 73432.

The previous prime is 146857. The next prime is 146891. The reversal of 146866 is 668641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 668641 = 571 ⋅1171.

It can be written as a sum of positive squares in only one way, i.e., 140625 + 6241 = 375^2 + 79^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36715 + ... + 36718.

2¹⁴⁶⁸⁶⁶ is an apocalyptic number.

146866 is a deficient number, since it is larger than the sum of its proper divisors (73436).

146866 is an equidigital number, since it uses as much as digits as its factorization.

146866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73435.

The product of its digits is 6912, while the sum is 31.

The square root of 146866 is about 383.2310008337. The cubic root of 146866 is about 52.7602796615.

The spelling of 146866 in words is "one hundred forty-six thousand, eight hundred sixty-six".