80927569 has 2 divisors, whose sum is σ = 80927570. Its totient is φ = 80927568.

The previous prime is 80927533. The next prime is 80927629. The reversal of 80927569 is 96572908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73702225 + 7225344 = 8585^2 + 2688^2 .

It is a cyclic number.

It is not a de Polignac number, because 80927569 - 2¹⁷ = 80796497 is a prime.

It is a super-2 number, since 2×80927569² = 13098542848499522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (80927519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40463784 + 40463785.

It is an arithmetic number, because the mean of its divisors is an integer number (40463785).

Almost surely, 2^80927569 is an apocalyptic number.

It is an amenable number.

80927569 is a deficient number, since it is larger than the sum of its proper divisors (1).

80927569 is an equidigital number, since it uses as much as digits as its factorization.

80927569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 80927569 is about 8995.9751555904. The cubic root of 80927569 is about 432.5458652508.

The spelling of 80927569 in words is "eighty million, nine hundred twenty-seven thousand, five hundred sixty-nine".