2687120839 has 16 divisors (see below), whose sum is σ = 2955284640. Its totient is φ = 2428093440.

The previous prime is 2687120837. The next prime is 2687120851. The reversal of 2687120839 is 9380217862.

It is a cyclic number.

It is not a de Polignac number, because 2687120839 - 2¹ = 2687120837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2687120833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177579 + ... + 192115.

It is an arithmetic number, because the mean of its divisors is an integer number (184705290).

Almost surely, 2^2687120839 is an apocalyptic number.

2687120839 is a deficient number, since it is larger than the sum of its proper divisors (268163801).

2687120839 is a wasteful number, since it uses less digits than its factorization.

2687120839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14850.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 2687120839 is about 51837.4463009126. The cubic root of 2687120839 is about 1390.2590547654.

The spelling of 2687120839 in words is "two billion, six hundred eighty-seven million, one hundred twenty thousand, eight hundred thirty-nine".