7072906 has 4 divisors (see below), whose sum is σ = 10609362. Its totient is φ = 3536452.

The previous prime is 7072873. The next prime is 7072909. The reversal of 7072906 is 6092707.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6092707 = 283 ⋅21529.

It can be written as a sum of positive squares in only one way, i.e., 6456681 + 616225 = 2541^2 + 785^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7072909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1768225 + ... + 1768228.

Almost surely, 2^7072906 is an apocalyptic number.

7072906 is a deficient number, since it is larger than the sum of its proper divisors (3536456).

7072906 is a wasteful number, since it uses less digits than its factorization.

7072906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3536455.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 7072906 is about 2659.4935608119. The cubic root of 7072906 is about 191.9549409598.

The spelling of 7072906 in words is "seven million, seventy-two thousand, nine hundred six".