7138706 has 8 divisors (see below), whose sum is σ = 10997580. Its totient is φ = 3472848.

The previous prime is 7138697. The next prime is 7138723. The reversal of 7138706 is 6078317.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7102225 + 36481 = 2665^2 + 191^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7138706² = 101922246708872, which contains 22 as substring.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 48161 + ... + 48308.

Almost surely, 2^7138706 is an apocalyptic number.

7138706 is a deficient number, since it is larger than the sum of its proper divisors (3858874).

7138706 is a wasteful number, since it uses less digits than its factorization.

7138706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96508.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 7138706 is about 2671.8356985414. The cubic root of 7138706 is about 192.5483636282.

The spelling of 7138706 in words is "seven million, one hundred thirty-eight thousand, seven hundred six".