84821706 has 12 divisors (see below), whose sum is σ = 183780402. Its totient is φ = 28273896.

The previous prime is 84821689. The next prime is 84821707. The reversal of 84821706 is 60712848.

84821706 is a `hidden beast` number, since 8 + 482 + 170 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 63059481 + 21762225 = 7941^2 + 4665^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84821707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2356141 + ... + 2356176.

Almost surely, 2^84821706 is an apocalyptic number.

84821706 is an abundant number, since it is smaller than the sum of its proper divisors (98958696).

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

84821706 is a wasteful number, since it uses less digits than its factorization.

84821706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4712325 (or 4712322 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 84821706 is about 9209.8700316563. The cubic root of 84821706 is about 439.3753291351.

The spelling of 84821706 in words is "eighty-four million, eight hundred twenty-one thousand, seven hundred six".