84910640 has 40 divisors (see below), whose sum is σ = 198106368. Its totient is φ = 33845760.

The previous prime is 84910633. The next prime is 84910667. The reversal of 84910640 is 4601948.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 84910597 and 84910606.

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 7 ways as a sum of consecutive naturals, for example, 23345 + ... + 26735.

Almost surely, 2^84910640 is an apocalyptic number.

84910640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84910640 is an abundant number, since it is smaller than the sum of its proper divisors (113195728).

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

84910640 is a wasteful number, since it uses less digits than its factorization.

84910640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3717 (or 3711 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 84910640 is about 9214.6969564929. The cubic root of 84910640 is about 439.5288344846.

The spelling of 84910640 in words is "eighty-four million, nine hundred ten thousand, six hundred forty".