880065421 has 2 divisors, whose sum is σ = 880065422. Its totient is φ = 880065420.

The previous prime is 880065413. The next prime is 880065449. The reversal of 880065421 is 124560088.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 693742921 + 186322500 = 26339^2 + 13650^2 .

It is a cyclic number.

It is not a de Polignac number, because 880065421 - 2³ = 880065413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (880065521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440032710 + 440032711.

It is an arithmetic number, because the mean of its divisors is an integer number (440032711).

Almost surely, 2^880065421 is an apocalyptic number.

It is an amenable number.

880065421 is a deficient number, since it is larger than the sum of its proper divisors (1).

880065421 is an equidigital number, since it uses as much as digits as its factorization.

880065421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 880065421 is about 29665.8965986198. The cubic root of 880065421 is about 958.3077177543.

The spelling of 880065421 in words is "eight hundred eighty million, sixty-five thousand, four hundred twenty-one".