80897711 has 4 divisors (see below), whose sum is σ = 80987424. Its totient is φ = 80808000.

The previous prime is 80897701. The next prime is 80897723. The reversal of 80897711 is 11779808.

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

It is a cyclic number.

It is not a de Polignac number, because 80897711 - 2¹⁴ = 80881327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80897701) 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, 43490 + ... + 45311.

It is an arithmetic number, because the mean of its divisors is an integer number (20246856).

Almost surely, 2^80897711 is an apocalyptic number.

80897711 is a deficient number, since it is larger than the sum of its proper divisors (89713).

80897711 is an equidigital number, since it uses as much as digits as its factorization.

80897711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89712.

The product of its (nonzero) digits is 28224, while the sum is 41.

The square root of 80897711 is about 8994.3154825701. The cubic root of 80897711 is about 432.4926631787.

The spelling of 80897711 in words is "eighty million, eight hundred ninety-seven thousand, seven hundred eleven".