20660622 has 8 divisors (see below), whose sum is σ = 41321256. Its totient is φ = 6886872.

The previous prime is 20660621. The next prime is 20660659. The reversal of 20660622 is 22606602.

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

20660622 is an admirable number.

It is a super-2 number, since 2×20660622² = 853722602853768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20660592 and 20660601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20660621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1721713 + ... + 1721724.

It is an arithmetic number, because the mean of its divisors is an integer number (5165157).

Almost surely, 2^20660622 is an apocalyptic number.

20660622 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20660622 is a wasteful number, since it uses less digits than its factorization.

20660622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443442.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20660622 is about 4545.3956923463. The cubic root of 20660622 is about 274.3981194640.

The spelling of 20660622 in words is "twenty million, six hundred sixty thousand, six hundred twenty-two".