2069906 has 4 divisors (see below), whose sum is σ = 3104862. Its totient is φ = 1034952.

The previous prime is 2069887. The next prime is 2069909. The reversal of 2069906 is 6099602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6099602 = 2 ⋅3049801.

It can be written as a sum of positive squares in only one way, i.e., 1666681 + 403225 = 1291^2 + 635^2 .

It is not an unprimeable number, because it can be changed into a prime (2069909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 517475 + ... + 517478.

2^2069906 is an apocalyptic number.

2069906 is a deficient number, since it is larger than the sum of its proper divisors (1034956).

2069906 is a wasteful number, since it uses less digits than its factorization.

2069906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034955.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 2069906 is about 1438.7167893647. The cubic root of 2069906 is about 127.4432606696.

The spelling of 2069906 in words is "two million, sixty-nine thousand, nine hundred six".