80694533 has 2 divisors, whose sum is σ = 80694534. Its totient is φ = 80694532.

The previous prime is 80694527. The next prime is 80694547. The reversal of 80694533 is 33549608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45387169 + 35307364 = 6737^2 + 5942^2 .

It is a cyclic number.

It is not a de Polignac number, because 80694533 - 2⁴ = 80694517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80694583) 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 as a sum of consecutive naturals, namely, 40347266 + 40347267.

It is an arithmetic number, because the mean of its divisors is an integer number (40347267).

Almost surely, 2^80694533 is an apocalyptic number.

It is an amenable number.

80694533 is a deficient number, since it is larger than the sum of its proper divisors (1).

80694533 is an equidigital number, since it uses as much as digits as its factorization.

80694533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 80694533 is about 8983.0135811987. The cubic root of 80694533 is about 432.1302851352.

The spelling of 80694533 in words is "eighty million, six hundred ninety-four thousand, five hundred thirty-three".