21600706 has 8 divisors (see below), whose sum is σ = 33154704. Its totient is φ = 10549140.

The previous prime is 21600673. The next prime is 21600743. The reversal of 21600706 is 60700612.

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

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 3 ways as a sum of consecutive naturals, for example, 125500 + ... + 125671.

It is an arithmetic number, because the mean of its divisors is an integer number (4144338).

Almost surely, 2^21600706 is an apocalyptic number.

21600706 is a deficient number, since it is larger than the sum of its proper divisors (11553998).

21600706 is a wasteful number, since it uses less digits than its factorization.

21600706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251216.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 21600706 is about 4647.6559683350. The cubic root of 21600706 is about 278.4983642075.

The spelling of 21600706 in words is "twenty-one million, six hundred thousand, seven hundred six".