20000697 has 8 divisors (see below), whose sum is σ = 26705856. Its totient is φ = 13314672.

The previous prime is 20000693. The next prime is 20000707. The reversal of 20000697 is 79600002.

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

It is not a de Polignac number, because 20000697 - 2² = 20000693 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20000693) 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, 2133 + ... + 6674.

It is an arithmetic number, because the mean of its divisors is an integer number (3338232).

Almost surely, 2^20000697 is an apocalyptic number.

It is an amenable number.

20000697 is a deficient number, since it is larger than the sum of its proper divisors (6705159).

20000697 is an equidigital number, since it uses as much as digits as its factorization.

20000697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9567.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 20000697 is about 4472.2138812897. The cubic root of 20000697 is about 271.4449148713. Note that the first 3 decimals are identical.

Adding to 20000697 its reverse (79600002), we get a palindrome (99600699).

The spelling of 20000697 in words is "twenty million, six hundred ninety-seven", and thus it is an aban number.