207270145 has 16 divisors (see below), whose sum is σ = 262342080. Its totient is φ = 156772800.

The previous prime is 207270143. The next prime is 207270179. The reversal of 207270145 is 541072702.

It is not a de Polignac number, because 207270145 - 2¹ = 207270143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (207270143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52335 + ... + 56155.

It is an arithmetic number, because the mean of its divisors is an integer number (16396380).

Almost surely, 2^207270145 is an apocalyptic number.

It is an amenable number.

207270145 is a deficient number, since it is larger than the sum of its proper divisors (55071935).

207270145 is a wasteful number, since it uses less digits than its factorization.

207270145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4416.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 207270145 is about 14396.8796966565. The cubic root of 207270145 is about 591.8053910868.

The spelling of 207270145 in words is "two hundred seven million, two hundred seventy thousand, one hundred forty-five".