2687385601 has 4 divisors (see below), whose sum is σ = 2780054100. Its totient is φ = 2594717104.

The previous prime is 2687385557. The next prime is 2687385607. The reversal of 2687385601 is 1065837862.

It is a Cunningham number, because it is equal to 51840²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1409251600 + 1278134001 = 37540^2 + 35751^2 .

It is a cyclic number.

It is not a de Polignac number, because 2687385601 - 2¹¹ = 2687383553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2687385607) 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, 46334206 + ... + 46334263.

It is an arithmetic number, because the mean of its divisors is an integer number (695013525).

Almost surely, 2^2687385601 is an apocalyptic number.

It is an amenable number.

2687385601 is a deficient number, since it is larger than the sum of its proper divisors (92668499).

2687385601 is an equidigital number, since it uses as much as digits as its factorization.

2687385601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92668498.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 2687385601 is about 51840.0000096451. Note that the first 5 decimals coincide. The cubic root of 2687385601 is about 1390.3047140046.

The spelling of 2687385601 in words is "two billion, six hundred eighty-seven million, three hundred eighty-five thousand, six hundred one".