20622797 has 8 divisors (see below), whose sum is σ = 22273944. Its totient is φ = 18980928.

The previous prime is 20622793. The next prime is 20622803. The reversal of 20622797 is 79722602.

It can be written as a sum of positive squares in 4 ways, for example, as 2116 + 20620681 = 46^2 + 4541^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20622797 - 2² = 20622793 is a prime.

It is a super-2 number, since 2×20622797² = 850599512206418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20622793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2723 + ... + 6975.

It is an arithmetic number, because the mean of its divisors is an integer number (2784243).

Almost surely, 2^20622797 is an apocalyptic number.

It is an amenable number.

20622797 is a deficient number, since it is larger than the sum of its proper divisors (1651147).

20622797 is a wasteful number, since it uses less digits than its factorization.

20622797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4639.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 20622797 is about 4541.2329823518. The cubic root of 20622797 is about 274.2305632103.

The spelling of 20622797 in words is "twenty million, six hundred twenty-two thousand, seven hundred ninety-seven".