147945 has 16 divisors (see below), whose sum is σ = 270720. Its totient is φ = 67584.

The previous prime is 147937. The next prime is 147949. The reversal of 147945 is 549741.

It is a happy number.

It is not a de Polignac number, because 147945 - 2³ = 147937 is a prime.

147945 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (147949) 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, 600 + ... + 809.

It is an arithmetic number, because the mean of its divisors is an integer number (16920).

2¹⁴⁷⁹⁴⁵ is an apocalyptic number.

147945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

147945 is a deficient number, since it is larger than the sum of its proper divisors (122775).

147945 is a wasteful number, since it uses less digits than its factorization.

147945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424.

The product of its digits is 5040, while the sum is 30.

The square root of 147945 is about 384.6361917449. The cubic root of 147945 is about 52.8891715168.

The spelling of 147945 in words is "one hundred forty-seven thousand, nine hundred forty-five".