80897177 has 4 divisors (see below), whose sum is σ = 81198180. Its totient is φ = 80596176.

The previous prime is 80897137. The next prime is 80897183. The reversal of 80897177 is 77179808.

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 2238016 + 78659161 = 1496^2 + 8869^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80897177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80897107) 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, 150098 + ... + 150635.

It is an arithmetic number, because the mean of its divisors is an integer number (20299545).

Almost surely, 2^80897177 is an apocalyptic number.

It is an amenable number.

80897177 is a deficient number, since it is larger than the sum of its proper divisors (301003).

80897177 is a wasteful number, since it uses less digits than its factorization.

80897177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301002.

The product of its (nonzero) digits is 197568, while the sum is 47.

The square root of 80897177 is about 8994.2857971047. The cubic root of 80897177 is about 432.4917115589.

The spelling of 80897177 in words is "eighty million, eight hundred ninety-seven thousand, one hundred seventy-seven".