20662630 has 16 divisors (see below), whose sum is σ = 37479024. Its totient is φ = 8201440.

The previous prime is 20662619. The next prime is 20662637. The reversal of 20662630 is 3626602.

It is a junction number, because it is equal to n+sod(n) for n = 20662595 and 20662604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20662637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6577 + ... + 9196.

It is an arithmetic number, because the mean of its divisors is an integer number (2342439).

Almost surely, 2^20662630 is an apocalyptic number.

20662630 is a deficient number, since it is larger than the sum of its proper divisors (16816394).

20662630 is a wasteful number, since it uses less digits than its factorization.

20662630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15911.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 20662630 is about 4545.6165698396. The cubic root of 20662630 is about 274.4070087345.

The spelling of 20662630 in words is "twenty million, six hundred sixty-two thousand, six hundred thirty".