145770 has 32 divisors (see below), whose sum is σ = 361152. Its totient is φ = 37632.

The previous prime is 145759. The next prime is 145771. The reversal of 145770 is 77541.

145770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 145770.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145770.

It is not an unprimeable number, because it can be changed into a prime (145771) 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, 1234 + ... + 1346.

It is an arithmetic number, because the mean of its divisors is an integer number (11286).

2¹⁴⁵⁷⁷⁰ is an apocalyptic number.

145770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180576).

145770 is an abundant number, since it is smaller than the sum of its proper divisors (215382).

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

145770 is a wasteful number, since it uses less digits than its factorization.

145770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 145770 is about 381.7983761097. The cubic root of 145770 is about 52.6287091418.

The spelling of 145770 in words is "one hundred forty-five thousand, seven hundred seventy".