80064421 has 2 divisors, whose sum is σ = 80064422. Its totient is φ = 80064420.

The previous prime is 80064419. The next prime is 80064427. The reversal of 80064421 is 12446008.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68707521 + 11356900 = 8289^2 + 3370^2 .

It is a cyclic number.

It is not a de Polignac number, because 80064421 - 2¹ = 80064419 is a prime.

Together with 80064419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80064427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40032210 + 40032211.

It is an arithmetic number, because the mean of its divisors is an integer number (40032211).

Almost surely, 2^80064421 is an apocalyptic number.

It is an amenable number.

80064421 is a deficient number, since it is larger than the sum of its proper divisors (1).

80064421 is an equidigital number, since it uses as much as digits as its factorization.

80064421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 80064421 is about 8947.8724286838. The cubic root of 80064421 is about 431.0025660059.

The spelling of 80064421 in words is "eighty million, sixty-four thousand, four hundred twenty-one".