80646403 has 2 divisors, whose sum is σ = 80646404. Its totient is φ = 80646402.

The previous prime is 80646373. The next prime is 80646427. The reversal of 80646403 is 30464608.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80646403 - 2⁹ = 80645891 is a prime.

It is not a weakly prime, because it can be changed into another prime (80646463) 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 as a sum of consecutive naturals, namely, 40323201 + 40323202.

It is an arithmetic number, because the mean of its divisors is an integer number (40323202).

Almost surely, 2^80646403 is an apocalyptic number.

80646403 is a deficient number, since it is larger than the sum of its proper divisors (1).

80646403 is an equidigital number, since it uses as much as digits as its factorization.

80646403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 80646403 is about 8980.3342365415. The cubic root of 80646403 is about 432.0443537993.

The spelling of 80646403 in words is "eighty million, six hundred forty-six thousand, four hundred three".