20706650 has 24 divisors (see below), whose sum is σ = 39414144. Its totient is φ = 8089200.

The previous prime is 20706641. The next prime is 20706659. The reversal of 20706650 is 5660702.

It is an interprime number because it is at equal distance from previous prime (20706641) and next prime (20706659).

It is not an unprimeable number, because it can be changed into a prime (20706659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2666 + ... + 6965.

It is an arithmetic number, because the mean of its divisors is an integer number (1642256).

Almost surely, 2^20706650 is an apocalyptic number.

20706650 is a deficient number, since it is larger than the sum of its proper divisors (18707494).

20706650 is a wasteful number, since it uses less digits than its factorization.

20706650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9686 (or 9681 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 20706650 is about 4550.4560211038. The cubic root of 20706650 is about 274.6017375536.

The spelling of 20706650 in words is "twenty million, seven hundred six thousand, six hundred fifty".