2000020397 has 4 divisors (see below), whose sum is σ = 2064537216. Its totient is φ = 1935503580.

The previous prime is 2000020387. The next prime is 2000020411. The reversal of 2000020397 is 7930200002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7930200002 = 2 ⋅3965100001.

It is a cyclic number.

It is not a de Polignac number, because 2000020397 - 2²² = 1995826093 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 (2000020367) 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, 32258363 + ... + 32258424.

It is an arithmetic number, because the mean of its divisors is an integer number (516134304).

Almost surely, 2^2000020397 is an apocalyptic number.

It is an amenable number.

2000020397 is a deficient number, since it is larger than the sum of its proper divisors (64516819).

2000020397 is an equidigital number, since it uses as much as digits as its factorization.

2000020397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64516818.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 2000020397 is about 44721.5875948071. The cubic root of 2000020397 is about 1259.9253329819.

Adding to 2000020397 its reverse (7930200002), we get a palindrome (9930220399).

The spelling of 2000020397 in words is "two billion, twenty thousand, three hundred ninety-seven".