2781690017 has 8 divisors (see below), whose sum is σ = 2805006336. Its totient is φ = 2758396032.

The previous prime is 2781690011. The next prime is 2781690019. The reversal of 2781690017 is 7100961872.

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

It is a cyclic number.

It is not a de Polignac number, because 2781690017 - 2¹⁴ = 2781673633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2781690011) 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, 325088 + ... + 333534.

It is an arithmetic number, because the mean of its divisors is an integer number (350625792).

Almost surely, 2^2781690017 is an apocalyptic number.

It is an amenable number.

2781690017 is a deficient number, since it is larger than the sum of its proper divisors (23316319).

2781690017 is a wasteful number, since it uses less digits than its factorization.

2781690017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11167.

The product of its (nonzero) digits is 42336, while the sum is 41.

The square root of 2781690017 is about 52741.7293705847. The cubic root of 2781690017 is about 1406.3807413272.

The spelling of 2781690017 in words is "two billion, seven hundred eighty-one million, six hundred ninety thousand, seventeen".