80905064 has 16 divisors (see below), whose sum is σ = 151899300. Its totient is φ = 40398592.

The previous prime is 80905049. The next prime is 80905073. The reversal of 80905064 is 46050908.

It can be written as a sum of positive squares in 2 ways, for example, as 76702564 + 4202500 = 8758^2 + 2050^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 80905064.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32 + ... + 12720.

Almost surely, 2^80905064 is an apocalyptic number.

It is an amenable number.

80905064 is a deficient number, since it is larger than the sum of its proper divisors (70994236).

80905064 is a wasteful number, since it uses less digits than its factorization.

80905064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13492 (or 13488 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 80905064 is about 8994.7242314592. The cubic root of 80905064 is about 432.5057662367.

The spelling of 80905064 in words is "eighty million, nine hundred five thousand, sixty-four".