2639106287 has 4 divisors (see below), whose sum is σ = 2639236920. Its totient is φ = 2638975656.

The previous prime is 2639106247. The next prime is 2639106307. The reversal of 2639106287 is 7826019362.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2639106287 - 2¹⁶ = 2639040751 is a prime.

It is a super-3 number, since 3×2639106287³ (a number of 29 digits) contains 333 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 (2639106247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27848 + ... + 77805.

It is an arithmetic number, because the mean of its divisors is an integer number (659809230).

Almost surely, 2^2639106287 is an apocalyptic number.

2639106287 is a deficient number, since it is larger than the sum of its proper divisors (130633).

2639106287 is a wasteful number, since it uses less digits than its factorization.

2639106287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130632.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 2639106287 is about 51372.2326456618. The cubic root of 2639106287 is about 1381.9286704438.

The spelling of 2639106287 in words is "two billion, six hundred thirty-nine million, one hundred six thousand, two hundred eighty-seven".