80606849 has 4 divisors (see below), whose sum is σ = 80701764. Its totient is φ = 80511936.

The previous prime is 80606839. The next prime is 80606879. The reversal of 80606849 is 94860608.

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 33930625 + 46676224 = 5825^2 + 6832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80606849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80606839) 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, 46172 + ... + 47885.

It is an arithmetic number, because the mean of its divisors is an integer number (20175441).

Almost surely, 2^80606849 is an apocalyptic number.

It is an amenable number.

80606849 is a deficient number, since it is larger than the sum of its proper divisors (94915).

80606849 is an equidigital number, since it uses as much as digits as its factorization.

80606849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94914.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 80606849 is about 8978.1317098826. The cubic root of 80606849 is about 431.9737084622.

The spelling of 80606849 in words is "eighty million, six hundred six thousand, eight hundred forty-nine".