80622609 has 4 divisors (see below), whose sum is σ = 107496816. Its totient is φ = 53748404.

The previous prime is 80622601. The next prime is 80622637. The reversal of 80622609 is 90622608.

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 80622609 - 2³ = 80622601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80622609.

It is not an unprimeable number, because it can be changed into a prime (80622601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13437099 + ... + 13437104.

It is an arithmetic number, because the mean of its divisors is an integer number (26874204).

Almost surely, 2^80622609 is an apocalyptic number.

It is an amenable number.

80622609 is a deficient number, since it is larger than the sum of its proper divisors (26874207).

80622609 is a wasteful number, since it uses less digits than its factorization.

80622609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26874206.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 80622609 is about 8979.0093551572. The cubic root of 80622609 is about 432.0018593456.

Subtracting 80622609 from its reverse (90622608), we obtain a palindrome (9999999).

The spelling of 80622609 in words is "eighty million, six hundred twenty-two thousand, six hundred nine".