20702666 has 8 divisors (see below), whose sum is σ = 32688480. Its totient is φ = 9806508.

The previous prime is 20702659. The next prime is 20702683. The reversal of 20702666 is 66620702.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272366 + ... + 272441.

It is an arithmetic number, because the mean of its divisors is an integer number (4086060).

Almost surely, 2^20702666 is an apocalyptic number.

20702666 is a deficient number, since it is larger than the sum of its proper divisors (11985814).

20702666 is a wasteful number, since it uses less digits than its factorization.

20702666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544828.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 20702666 is about 4550.0182417217. The cubic root of 20702666 is about 274.5841251200.

The spelling of 20702666 in words is "twenty million, seven hundred two thousand, six hundred sixty-six".