2639346085 has 16 divisors (see below), whose sum is σ = 3200104944. Its totient is φ = 2089608192.

The previous prime is 2639346077. The next prime is 2639346089. The reversal of 2639346085 is 5806439362.

It is a happy number.

2639346085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 26193924 + 2613152161 = 5118^2 + 51119^2 .

It is a cyclic number.

It is not a de Polignac number, because 2639346085 - 2³ = 2639346077 is a prime.

It is a super-2 number, since 2×2639346085² = 13932295512809654450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639346089) 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, 410959 + ... + 417331.

It is an arithmetic number, because the mean of its divisors is an integer number (200006559).

Almost surely, 2^2639346085 is an apocalyptic number.

It is an amenable number.

2639346085 is a deficient number, since it is larger than the sum of its proper divisors (560758859).

2639346085 is a wasteful number, since it uses less digits than its factorization.

2639346085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7224.

The product of its (nonzero) digits is 933120, while the sum is 46.

The square root of 2639346085 is about 51374.5665188525. The cubic root of 2639346085 is about 1381.9705247256.

The spelling of 2639346085 in words is "two billion, six hundred thirty-nine million, three hundred forty-six thousand, eighty-five".