80266969 has 2 divisors, whose sum is σ = 80266970. Its totient is φ = 80266968.

The previous prime is 80266961. The next prime is 80267009. The reversal of 80266969 is 96966208.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79566400 + 700569 = 8920^2 + 837^2 .

It is a cyclic number.

It is not a de Polignac number, because 80266969 - 2³ = 80266961 is a prime.

It is a super-2 number, since 2×80266969² = 12885572624893922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80266961) 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, 40133484 + 40133485.

It is an arithmetic number, because the mean of its divisors is an integer number (40133485).

Almost surely, 2^80266969 is an apocalyptic number.

It is an amenable number.

80266969 is a deficient number, since it is larger than the sum of its proper divisors (1).

80266969 is an equidigital number, since it uses as much as digits as its factorization.

80266969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 80266969 is about 8959.1835007438. The cubic root of 80266969 is about 431.3657118889.

The spelling of 80266969 in words is "eighty million, two hundred sixty-six thousand, nine hundred sixty-nine".