2731684947 has 8 divisors (see below), whose sum is σ = 3642607056. Its totient is φ = 1820943072.

The previous prime is 2731684931. The next prime is 2731684987. The reversal of 2731684947 is 7494861372.

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

It is not a de Polignac number, because 2731684947 - 2⁴ = 2731684931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2731684947.

It is not an unprimeable number, because it can be changed into a prime (2731684987) 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, 4468 + ... + 74049.

It is an arithmetic number, because the mean of its divisors is an integer number (455325882).

Almost surely, 2^2731684947 is an apocalyptic number.

2731684947 is a deficient number, since it is larger than the sum of its proper divisors (910922109).

2731684947 is a wasteful number, since it uses less digits than its factorization.

2731684947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90117.

The product of its digits is 2032128, while the sum is 51.

The square root of 2731684947 is about 52265.5235025920. The cubic root of 2731684947 is about 1397.9024621830.

The spelling of 2731684947 in words is "two billion, seven hundred thirty-one million, six hundred eighty-four thousand, nine hundred forty-seven".