80027621 has 4 divisors (see below), whose sum is σ = 80518752. Its totient is φ = 79536492.

The previous prime is 80027593. The next prime is 80027627. The reversal of 80027621 is 12672008.

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 80027621 - 2²⁶ = 12918757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80027627) 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, 245321 + ... + 245646.

It is an arithmetic number, because the mean of its divisors is an integer number (20129688).

Almost surely, 2^80027621 is an apocalyptic number.

It is an amenable number.

80027621 is a deficient number, since it is larger than the sum of its proper divisors (491131).

80027621 is a wasteful number, since it uses less digits than its factorization.

80027621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491130.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 80027621 is about 8945.8158375857. The cubic root of 80027621 is about 430.9365220008.

Adding to 80027621 its reverse (12672008), we get a palindrome (92699629).

The spelling of 80027621 in words is "eighty million, twenty-seven thousand, six hundred twenty-one".