2725640786 has 16 divisors (see below), whose sum is σ = 4472787168. Its totient is φ = 1235414400.

The previous prime is 2725640761. The next prime is 2725640789. The reversal of 2725640786 is 6870465272.

It is a self number, because there is not a number n which added to its sum of digits gives 2725640786.

It is not an unprimeable number, because it can be changed into a prime (2725640789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167720 + ... + 183251.

It is an arithmetic number, because the mean of its divisors is an integer number (279549198).

Almost surely, 2^2725640786 is an apocalyptic number.

2725640786 is a deficient number, since it is larger than the sum of its proper divisors (1747146382).

2725640786 is a wasteful number, since it uses less digits than its factorization.

2725640786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351337.

The product of its (nonzero) digits is 1128960, while the sum is 47.

The square root of 2725640786 is about 52207.6698005188. The cubic root of 2725640786 is about 1396.8706952280.

The spelling of 2725640786 in words is "two billion, seven hundred twenty-five million, six hundred forty thousand, seven hundred eighty-six".