207145 has 8 divisors (see below), whose sum is σ = 263304. Its totient is φ = 155904.

The previous prime is 207139. The next prime is 207169. The reversal of 207145 is 541702.

It can be written as a sum of positive squares in 4 ways, for example, as 94249 + 112896 = 307^2 + 336^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 207145 - 2⁵ = 207113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1134 + ... + 1303.

It is an arithmetic number, because the mean of its divisors is an integer number (32913).

2²⁰⁷¹⁴⁵ is an apocalyptic number.

It is an amenable number.

207145 is a deficient number, since it is larger than the sum of its proper divisors (56159).

207145 is a wasteful number, since it uses less digits than its factorization.

207145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 207145 is about 455.1318490284. The cubic root of 207145 is about 59.1686260895.

Adding to 207145 its reverse (541702), we get a palindrome (748847).

It can be divided in two parts, 2071 and 45, that added together give a square (2116 = 46²).

The spelling of 207145 in words is "two hundred seven thousand, one hundred forty-five".