80534567 has 4 divisors (see below), whose sum is σ = 81316560. Its totient is φ = 79752576.

The previous prime is 80534561. The next prime is 80534609. The reversal of 80534567 is 76543508.

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 80534567 - 2¹⁰ = 80533543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80534567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80534561) 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, 390842 + ... + 391047.

It is an arithmetic number, because the mean of its divisors is an integer number (20329140).

Almost surely, 2^80534567 is an apocalyptic number.

80534567 is a deficient number, since it is larger than the sum of its proper divisors (781993).

80534567 is a wasteful number, since it uses less digits than its factorization.

80534567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781992.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 80534567 is about 8974.1053593102. The cubic root of 80534567 is about 431.8445496223.

The spelling of 80534567 in words is "eighty million, five hundred thirty-four thousand, five hundred sixty-seven".