84656040 has 128 divisors (see below), whose sum is σ = 299704320. Its totient is φ = 18720000.

The previous prime is 84656003. The next prime is 84656059. The reversal of 84656040 is 4065648.

It is a happy number.

84656040 is nontrivially palindromic in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 84655992 and 84656010.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24415 + ... + 27665.

It is an arithmetic number, because the mean of its divisors is an integer number (2341440).

Almost surely, 2^84656040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84656040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149852160).

84656040 is an abundant number, since it is smaller than the sum of its proper divisors (215048280).

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

84656040 is a wasteful number, since it uses less digits than its factorization.

84656040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303 (or 3299 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 84656040 is about 9200.8716978339. The cubic root of 84656040 is about 439.0890934657.

The spelling of 84656040 in words is "eighty-four million, six hundred fifty-six thousand, forty".