7966081 has 4 divisors (see below), whose sum is σ = 8434692. Its totient is φ = 7497472.

The previous prime is 7966061. The next prime is 7966103. The reversal of 7966081 is 1806697.

7966081 = T₂₃₀₃ + T₂₃₀₄ + T₂₃₀₅.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5130225 + 2835856 = 2265^2 + 1684^2 .

It is a cyclic number.

It is not a de Polignac number, because 7966081 - 2¹⁵ = 7933313 is a prime.

It is a super-2 number, since 2×7966081² = 126916892997122, which contains 22 as substring.

It is a Duffinian number.

7966081 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7966081.

It is not an unprimeable number, because it can be changed into a prime (7966001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234280 + ... + 234313.

It is an arithmetic number, because the mean of its divisors is an integer number (2108673).

Almost surely, 2^7966081 is an apocalyptic number.

7966081 is the 2305-th centered triangular number.

It is an amenable number.

7966081 is a deficient number, since it is larger than the sum of its proper divisors (468611).

7966081 is a wasteful number, since it uses less digits than its factorization.

7966081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468610.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 7966081 is about 2822.4246668423. The cubic root of 7966081 is about 199.7169412444.

The spelling of 7966081 in words is "seven million, nine hundred sixty-six thousand, eighty-one".