80640084 has 36 divisors (see below), whose sum is σ = 218881824. Its totient is φ = 23039856.

The previous prime is 80640073. The next prime is 80640101. The reversal of 80640084 is 48004608.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 67984 + ... + 69159.

Almost surely, 2^80640084 is an apocalyptic number.

80640084 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

80640084 is an abundant number, since it is smaller than the sum of its proper divisors (138241740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80640084 is a wasteful number, since it uses less digits than its factorization.

80640084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137164 (or 137155 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 80640084 is about 8979.9824053280. The cubic root of 80640084 is about 432.0330693135.

The spelling of 80640084 in words is "eighty million, six hundred forty thousand, eighty-four".