2069945 has 8 divisors (see below), whose sum is σ = 2499336. Its totient is φ = 1645696.

The previous prime is 2069941. The next prime is 2069953. The reversal of 2069945 is 5499602.

It can be written as a sum of positive squares in 4 ways, for example, as 118336 + 1951609 = 344^2 + 1397^2 .

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 2069945 - 2² = 2069941 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2069941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332 + ... + 2061.

It is an arithmetic number, because the mean of its divisors is an integer number (312417).

2^2069945 is an apocalyptic number.

It is an amenable number.

2069945 is a deficient number, since it is larger than the sum of its proper divisors (429391).

2069945 is a wasteful number, since it uses less digits than its factorization.

2069945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 2069945 is about 1438.7303430456. The cubic root of 2069945 is about 127.4440610692. Note that the first 3 decimals are identical.

The spelling of 2069945 in words is "two million, sixty-nine thousand, nine hundred forty-five".