80266987 has 4 divisors (see below), whose sum is σ = 83756880. Its totient is φ = 76777096.

The previous prime is 80266969. The next prime is 80267009. The reversal of 80266987 is 78966208.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80266987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80266187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1744912 + ... + 1744957.

It is an arithmetic number, because the mean of its divisors is an integer number (20939220).

Almost surely, 2^80266987 is an apocalyptic number.

80266987 is a deficient number, since it is larger than the sum of its proper divisors (3489893).

80266987 is a wasteful number, since it uses less digits than its factorization.

80266987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3489892.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 80266987 is about 8959.1845052996. The cubic root of 80266987 is about 431.3657441337.

The spelling of 80266987 in words is "eighty million, two hundred sixty-six thousand, nine hundred eighty-seven".