81348967 has 12 divisors (see below), whose sum is σ = 95062800. Its totient is φ = 69584508.

The previous prime is 81348959. The next prime is 81348979. The reversal of 81348967 is 76984318.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 81348967 - 2³ = 81348959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81348167) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166798 + ... + 167284.

It is an arithmetic number, because the mean of its divisors is an integer number (7921900).

Almost surely, 2^81348967 is an apocalyptic number.

81348967 is a deficient number, since it is larger than the sum of its proper divisors (13713833).

81348967 is an frugal number, since it uses more digits than its factorization.

81348967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995 (or 494 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 81348967 is about 9019.3662194192. The cubic root of 81348967 is about 433.2953358530.

The spelling of 81348967 in words is "eighty-one million, three hundred forty-eight thousand, nine hundred sixty-seven".