7966538 has 8 divisors (see below), whose sum is σ = 11967588. Its totient is φ = 3977344.

The previous prime is 7966499. The next prime is 7966549. The reversal of 7966538 is 8356697.

It can be written as a sum of positive squares in 2 ways, for example, as 7656289 + 310249 = 2767^2 + 557^2 .

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

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, 1031 + ... + 4122.

Almost surely, 2^7966538 is an apocalyptic number.

7966538 is a deficient number, since it is larger than the sum of its proper divisors (4001050).

7966538 is a wasteful number, since it uses less digits than its factorization.

7966538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5928.

The product of its digits is 272160, while the sum is 44.

The square root of 7966538 is about 2822.5056244408. The cubic root of 7966538 is about 199.7207603074.

The spelling of 7966538 in words is "seven million, nine hundred sixty-six thousand, five hundred thirty-eight".