80787563 has 8 divisors (see below), whose sum is σ = 86238720. Its totient is φ = 75456360.

The previous prime is 80787521. The next prime is 80787571. The reversal of 80787563 is 36578708.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80787563 - 2¹² = 80783467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80787503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28595 + ... + 31292.

It is an arithmetic number, because the mean of its divisors is an integer number (10779840).

Almost surely, 2^80787563 is an apocalyptic number.

80787563 is a deficient number, since it is larger than the sum of its proper divisors (5451157).

80787563 is a wasteful number, since it uses less digits than its factorization.

80787563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59977.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 80787563 is about 8988.1901960295. The cubic root of 80787563 is about 432.2962841605.

The spelling of 80787563 in words is "eighty million, seven hundred eighty-seven thousand, five hundred sixty-three".