80662505 has 32 divisors (see below), whose sum is σ = 127042560. Its totient is φ = 47632320.

The previous prime is 80662489. The next prime is 80662513. The reversal of 80662505 is 50526608.

It is a happy number.

It is not a de Polignac number, because 80662505 - 2⁴ = 80662489 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1802 + ... + 12828.

It is an arithmetic number, because the mean of its divisors is an integer number (3970080).

Almost surely, 2^80662505 is an apocalyptic number.

It is an amenable number.

80662505 is a deficient number, since it is larger than the sum of its proper divisors (46380055).

80662505 is a wasteful number, since it uses less digits than its factorization.

80662505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11069.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 80662505 is about 8981.2307063119. The cubic root of 80662505 is about 432.0731061263.

The spelling of 80662505 in words is "eighty million, six hundred sixty-two thousand, five hundred five".