2686440002 has 4 divisors (see below), whose sum is σ = 4029660006. Its totient is φ = 1343220000.

The previous prime is 2686439999. The next prime is 2686440049. The reversal of 2686440002 is 2000446862.

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: 2000446862 = 2 ⋅1000223431.

It can be written as a sum of positive squares in only one way, i.e., 2573634361 + 112805641 = 50731^2 + 10621^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 671609999 + ... + 671610002.

Almost surely, 2^2686440002 is an apocalyptic number.

2686440002 is a deficient number, since it is larger than the sum of its proper divisors (1343220004).

2686440002 is a wasteful number, since it uses less digits than its factorization.

2686440002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343220003.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 2686440002 is about 51830.8788464946. The cubic root of 2686440002 is about 1390.1416279960.

Adding to 2686440002 its reverse (2000446862), we get a palindrome (4686886864).

It can be divided in two parts, 26864 and 40002, that added together give a palindrome (66866).

The spelling of 2686440002 in words is "two billion, six hundred eighty-six million, four hundred forty thousand, two".