84720512 has 16 divisors (see below), whose sum is σ = 168779400. Its totient is φ = 42360192.

The previous prime is 84720499. The next prime is 84720527. The reversal of 84720512 is 21502748.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 330812 + ... + 331067.

Almost surely, 2^84720512 is an apocalyptic number.

It is an amenable number.

84720512 is a deficient number, since it is larger than the sum of its proper divisors (84058888).

84720512 is an equidigital number, since it uses as much as digits as its factorization.

84720512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661893 (or 661881 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 84720512 is about 9204.3746121070. The cubic root of 84720512 is about 439.2005317384.

The spelling of 84720512 in words is "eighty-four million, seven hundred twenty thousand, five hundred twelve".