2066945 has 8 divisors (see below), whose sum is σ = 2626344. Its totient is φ = 1556224.

The previous prime is 2066929. The next prime is 2066951. The reversal of 2066945 is 5496602.

It can be written as a sum of positive squares in 4 ways, for example, as 588289 + 1478656 = 767^2 + 1216^2 .

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 2066945 - 2⁴ = 2066929 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, 12074 + ... + 12243.

It is an arithmetic number, because the mean of its divisors is an integer number (328293).

2^2066945 is an apocalyptic number.

It is an amenable number.

2066945 is a deficient number, since it is larger than the sum of its proper divisors (559399).

2066945 is a wasteful number, since it uses less digits than its factorization.

2066945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24339.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 2066945 is about 1437.6873790919. The cubic root of 2066945 is about 127.3824624859.

The spelling of 2066945 in words is "two million, sixty-six thousand, nine hundred forty-five".