80654969 has 2 divisors, whose sum is σ = 80654970. Its totient is φ = 80654968.

The previous prime is 80654941. The next prime is 80655007. The reversal of 80654969 is 96945608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50239744 + 30415225 = 7088^2 + 5515^2 .

It is a cyclic number.

It is not a de Polignac number, because 80654969 - 2¹⁶ = 80589433 is a prime.

It is a super-2 number, since 2×80654969² = 13010448048781922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80654929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40327484 + 40327485.

It is an arithmetic number, because the mean of its divisors is an integer number (40327485).

Almost surely, 2^80654969 is an apocalyptic number.

It is an amenable number.

80654969 is a deficient number, since it is larger than the sum of its proper divisors (1).

80654969 is an equidigital number, since it uses as much as digits as its factorization.

80654969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 80654969 is about 8980.8111549013. The cubic root of 80654969 is about 432.0596500422.

The spelling of 80654969 in words is "eighty million, six hundred fifty-four thousand, nine hundred sixty-nine".