80864873 has 4 divisors (see below), whose sum is σ = 81172608. Its totient is φ = 80557140.

The previous prime is 80864867. The next prime is 80864881. The reversal of 80864873 is 37846808.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80864873 - 2⁶ = 80864809 is a prime.

It is a super-2 number, since 2×80864873² = 13078255370612258, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (80864813) 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, 153473 + ... + 153998.

It is an arithmetic number, because the mean of its divisors is an integer number (20293152).

Almost surely, 2^80864873 is an apocalyptic number.

It is an amenable number.

80864873 is a deficient number, since it is larger than the sum of its proper divisors (307735).

80864873 is a wasteful number, since it uses less digits than its factorization.

80864873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307734.

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 80864873 is about 8992.4898109478. The cubic root of 80864873 is about 432.4341361162.

The spelling of 80864873 in words is "eighty million, eight hundred sixty-four thousand, eight hundred seventy-three".