84640854 has 8 divisors (see below), whose sum is σ = 169281720. Its totient is φ = 28213616.

The previous prime is 84640823. The next prime is 84640859. The reversal of 84640854 is 45804648.

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

84640854 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84640859) by changing a digit.

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, 7053399 + ... + 7053410.

It is an arithmetic number, because the mean of its divisors is an integer number (21160215).

Almost surely, 2^84640854 is an apocalyptic number.

84640854 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

84640854 is a wasteful number, since it uses less digits than its factorization.

84640854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14106814.

The product of its (nonzero) digits is 122880, while the sum is 39.

The square root of 84640854 is about 9200.0464129264. The cubic root of 84640854 is about 439.0628366043.

The spelling of 84640854 in words is "eighty-four million, six hundred forty thousand, eight hundred fifty-four".