80616421 has 4 divisors (see below), whose sum is σ = 82331712. Its totient is φ = 78901132.

The previous prime is 80616413. The next prime is 80616439. The reversal of 80616421 is 12461608.

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 80616421 - 2³ = 80616413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80616421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80610421) 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, 857575 + ... + 857668.

It is an arithmetic number, because the mean of its divisors is an integer number (20582928).

Almost surely, 2^80616421 is an apocalyptic number.

It is an amenable number.

80616421 is a deficient number, since it is larger than the sum of its proper divisors (1715291).

80616421 is a wasteful number, since it uses less digits than its factorization.

80616421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715290.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 80616421 is about 8978.6647671021. The cubic root of 80616421 is about 431.9908066316.

The spelling of 80616421 in words is "eighty million, six hundred sixteen thousand, four hundred twenty-one".