80421655 has 8 divisors (see below), whose sum is σ = 96891984. Its totient is φ = 64080000.

The previous prime is 80421637. The next prime is 80421659. The reversal of 80421655 is 55612408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80421655 - 2⁷ = 80421527 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 (80421659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30786 + ... + 33295.

It is an arithmetic number, because the mean of its divisors is an integer number (12111498).

Almost surely, 2^80421655 is an apocalyptic number.

80421655 is a deficient number, since it is larger than the sum of its proper divisors (16470329).

80421655 is a wasteful number, since it uses less digits than its factorization.

80421655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64337.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 80421655 is about 8967.8121635101. The cubic root of 80421655 is about 431.6426353419.

The spelling of 80421655 in words is "eighty million, four hundred twenty-one thousand, six hundred fifty-five".