20799701 has 4 divisors (see below), whose sum is σ = 22399692. Its totient is φ = 19199712.

The previous prime is 20799689. The next prime is 20799731. The reversal of 20799701 is 10799702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10719076 + 10080625 = 3274^2 + 3175^2 .

It is a cyclic number.

It is not a de Polignac number, because 20799701 - 2²² = 16605397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20799731) 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 3 ways as a sum of consecutive naturals, for example, 799976 + ... + 800001.

It is an arithmetic number, because the mean of its divisors is an integer number (5599923).

Almost surely, 2^20799701 is an apocalyptic number.

It is an amenable number.

20799701 is a deficient number, since it is larger than the sum of its proper divisors (1599991).

20799701 is a wasteful number, since it uses less digits than its factorization.

20799701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599990.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 20799701 is about 4560.6689202353. The cubic root of 20799701 is about 275.0124556342.

Subtracting from 20799701 its reverse (10799702), we obtain a palindrome (9999999).

The spelling of 20799701 in words is "twenty million, seven hundred ninety-nine thousand, seven hundred one".