106660145 has 4 divisors (see below), whose sum is σ = 127992180. Its totient is φ = 85328112.

The previous prime is 106660123. The next prime is 106660157. The reversal of 106660145 is 541066601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71031184 + 35628961 = 8428^2 + 5969^2 .

It is a cyclic number.

It is not a de Polignac number, because 106660145 - 2¹² = 106656049 is a prime.

It is a super-2 number, since 2×106660145² = 22752773062842050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10666010 + ... + 10666019.

It is an arithmetic number, because the mean of its divisors is an integer number (31998045).

Almost surely, 2^106660145 is an apocalyptic number.

It is an amenable number.

106660145 is a deficient number, since it is larger than the sum of its proper divisors (21332035).

106660145 is an equidigital number, since it uses as much as digits as its factorization.

106660145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21332034.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 106660145 is about 10327.6398562305. The cubic root of 106660145 is about 474.2427750381.

The spelling of 106660145 in words is "one hundred six million, six hundred sixty thousand, one hundred forty-five".