80356069 has 2 divisors, whose sum is σ = 80356070. Its totient is φ = 80356068.

The previous prime is 80356063. The next prime is 80356079. The reversal of 80356069 is 96065308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72165025 + 8191044 = 8495^2 + 2862^2 .

It is a cyclic number.

It is not a de Polignac number, because 80356069 - 2¹⁷ = 80224997 is a prime.

It is a super-2 number, since 2×80356069² = 12914195650265522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80356063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40178034 + 40178035.

It is an arithmetic number, because the mean of its divisors is an integer number (40178035).

Almost surely, 2^80356069 is an apocalyptic number.

It is an amenable number.

80356069 is a deficient number, since it is larger than the sum of its proper divisors (1).

80356069 is an equidigital number, since it uses as much as digits as its factorization.

80356069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 80356069 is about 8964.1546729181. The cubic root of 80356069 is about 431.5252647442.

The spelling of 80356069 in words is "eighty million, three hundred fifty-six thousand, sixty-nine".