270945 has 24 divisors (see below), whose sum is σ = 489216. Its totient is φ = 143856.

The previous prime is 270937. The next prime is 270953. The reversal of 270945 is 549072.

It is an interprime number because it is at equal distance from previous prime (270937) and next prime (270953).

It is not a de Polignac number, because 270945 - 2³ = 270937 is a prime.

It is a super-2 number, since 2×270945² = 146822386050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between even and odd.

270945 is a lucky number.

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1104 + ... + 1326.

It is an arithmetic number, because the mean of its divisors is an integer number (20384).

2²⁷⁰⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

270945 is a deficient number, since it is larger than the sum of its proper divisors (218271).

270945 is an equidigital number, since it uses as much as digits as its factorization.

270945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 270945 is about 520.5237746732. The cubic root of 270945 is about 64.7083581130.

The spelling of 270945 in words is "two hundred seventy thousand, nine hundred forty-five".