80971854 has 8 divisors (see below), whose sum is σ = 161943720. Its totient is φ = 26990616.

The previous prime is 80971853. The next prime is 80971859. The reversal of 80971854 is 45817908.

It is a sphenic number, since it is the product of 3 distinct primes.

80971854 is an admirable number.

It is a super-2 number, since 2×80971854² = 13112882280394632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80971853) 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, 6747649 + ... + 6747660.

It is an arithmetic number, because the mean of its divisors is an integer number (20242965).

Almost surely, 2^80971854 is an apocalyptic number.

80971854 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80971854 is a wasteful number, since it uses less digits than its factorization.

80971854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13495314.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 80971854 is about 8998.4361974734. The cubic root of 80971854 is about 432.6247497846.

The spelling of 80971854 in words is "eighty million, nine hundred seventy-one thousand, eight hundred fifty-four".