80627609 has 2 divisors, whose sum is σ = 80627610. Its totient is φ = 80627608.

The previous prime is 80627579. The next prime is 80627629. The reversal of 80627609 is 90672608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60016009 + 20611600 = 7747^2 + 4540^2 .

It is a cyclic number.

It is not a de Polignac number, because 80627609 - 2⁸ = 80627353 is a prime.

It is a super-2 number, since 2×80627609² = 13001622666113762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (80627629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40313804 + 40313805.

It is an arithmetic number, because the mean of its divisors is an integer number (40313805).

Almost surely, 2^80627609 is an apocalyptic number.

It is an amenable number.

80627609 is a deficient number, since it is larger than the sum of its proper divisors (1).

80627609 is an equidigital number, since it uses as much as digits as its factorization.

80627609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 80627609 is about 8979.2877779922. The cubic root of 80627609 is about 432.0107896968.

The spelling of 80627609 in words is "eighty million, six hundred twenty-seven thousand, six hundred nine".