80938621 has 4 divisors (see below), whose sum is σ = 80964544. Its totient is φ = 80912700.

The previous prime is 80938607. The next prime is 80938631. The reversal of 80938621 is 12683908.

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 80938621 - 2⁷ = 80938493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80938601) 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, 7515 + ... + 14776.

It is an arithmetic number, because the mean of its divisors is an integer number (20241136).

Almost surely, 2^80938621 is an apocalyptic number.

It is an amenable number.

80938621 is a deficient number, since it is larger than the sum of its proper divisors (25923).

80938621 is a wasteful number, since it uses less digits than its factorization.

80938621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25922.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 80938621 is about 8996.5894093262. The cubic root of 80938621 is about 432.5655547886.

The spelling of 80938621 in words is "eighty million, nine hundred thirty-eight thousand, six hundred twenty-one".