145786 has 4 divisors (see below), whose sum is σ = 218682. Its totient is φ = 72892.

The previous prime is 145777. The next prime is 145799. The reversal of 145786 is 687541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 145161 + 625 = 381^2 + 25^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36445 + ... + 36448.

2¹⁴⁵⁷⁸⁶ is an apocalyptic number.

145786 is a deficient number, since it is larger than the sum of its proper divisors (72896).

145786 is an equidigital number, since it uses as much as digits as its factorization.

145786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72895.

The product of its digits is 6720, while the sum is 31.

The square root of 145786 is about 381.8193290026. The cubic root of 145786 is about 52.6306346146.

The spelling of 145786 in words is "one hundred forty-five thousand, seven hundred eighty-six".