2670145 has 4 divisors (see below), whose sum is σ = 3204180. Its totient is φ = 2136112.

The previous prime is 2670131. The next prime is 2670167. The reversal of 2670145 is 5410762.

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 1555009 + 1115136 = 1247^2 + 1056^2 .

It is a cyclic number.

It is not a de Polignac number, because 2670145 - 2⁵ = 2670113 is a prime.

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, 267010 + ... + 267019.

It is an arithmetic number, because the mean of its divisors is an integer number (801045).

2^2670145 is an apocalyptic number.

It is an amenable number.

2670145 is a deficient number, since it is larger than the sum of its proper divisors (534035).

2670145 is an equidigital number, since it uses as much as digits as its factorization.

2670145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534034.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 2670145 is about 1634.0578325139. The cubic root of 2670145 is about 138.7325222148.

The spelling of 2670145 in words is "two million, six hundred seventy thousand, one hundred forty-five".