2006831797 has 4 divisors (see below), whose sum is σ = 2055778956. Its totient is φ = 1957884640.

The previous prime is 2006831689. The next prime is 2006831807. The reversal of 2006831797 is 7971386002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7971386002 = 2 ⋅3985693001.

It can be written as a sum of positive squares in 2 ways, for example, as 957654916 + 1049176881 = 30946^2 + 32391^2 .

It is a cyclic number.

It is not a de Polignac number, because 2006831797 - 2¹⁵ = 2006799029 is a prime.

It is a super-2 number, since 2×2006831797² = 8054747722900498418, 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 (2006832797) 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, 24473518 + ... + 24473599.

It is an arithmetic number, because the mean of its divisors is an integer number (513944739).

Almost surely, 2^2006831797 is an apocalyptic number.

It is an amenable number.

2006831797 is a deficient number, since it is larger than the sum of its proper divisors (48947159).

2006831797 is an equidigital number, since it uses as much as digits as its factorization.

2006831797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48947158.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 2006831797 is about 44797.6762455376. The cubic root of 2006831797 is about 1261.3540069941.

The spelling of 2006831797 in words is "two billion, six million, eight hundred thirty-one thousand, seven hundred ninety-seven".