20763097 has 4 divisors (see below), whose sum is σ = 21269556. Its totient is φ = 20256640.

The previous prime is 20763091. The next prime is 20763131. The reversal of 20763097 is 79036702.

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 549081 + 20214016 = 741^2 + 4496^2 .

It is a cyclic number.

It is not a de Polignac number, because 20763097 - 2⁷ = 20762969 is a prime.

It is a super-2 number, since 2×20763097² = 862212394062818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20763091) 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, 253168 + ... + 253249.

It is an arithmetic number, because the mean of its divisors is an integer number (5317389).

Almost surely, 2^20763097 is an apocalyptic number.

It is an amenable number.

20763097 is a deficient number, since it is larger than the sum of its proper divisors (506459).

20763097 is an equidigital number, since it uses as much as digits as its factorization.

20763097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506458.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 20763097 is about 4556.6541453132. The cubic root of 20763097 is about 274.8510355757.

Adding to 20763097 its reverse (79036702), we get a palindrome (99799799).

The spelling of 20763097 in words is "twenty million, seven hundred sixty-three thousand, ninety-seven".