2731690069 has 4 divisors (see below), whose sum is σ = 2741552044. Its totient is φ = 2721828096.

The previous prime is 2731690063. The next prime is 2731690081. The reversal of 2731690069 is 9600961372.

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 712356100 + 2019333969 = 26690^2 + 44937^2 .

It is a cyclic number.

It is not a de Polignac number, because 2731690069 - 2⁵ = 2731690037 is a prime.

It is a super-2 number, since 2×2731690069² = 14924261266146449522, 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 (2731690063) 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, 4930572 + ... + 4931125.

It is an arithmetic number, because the mean of its divisors is an integer number (685388011).

Almost surely, 2^2731690069 is an apocalyptic number.

It is an amenable number.

2731690069 is a deficient number, since it is larger than the sum of its proper divisors (9861975).

2731690069 is an equidigital number, since it uses as much as digits as its factorization.

2731690069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9861974.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 2731690069 is about 52265.5725023653. The cubic root of 2731690069 is about 1397.9033358869.

The spelling of 2731690069 in words is "two billion, seven hundred thirty-one million, six hundred ninety thousand, sixty-nine".