2678621701 has 6 divisors (see below), whose sum is σ = 3115947750. Its totient is φ = 2295961416.

The previous prime is 2678621689. The next prime is 2678621719. The reversal of 2678621701 is 1071268762.

It can be written as a sum of positive squares in only one way, i.e., 2011432801 + 667188900 = 44849^2 + 25830^2 .

It is not a de Polignac number, because 2678621701 - 2²⁹ = 2141750789 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 (2678621731) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27332826 + ... + 27332923.

It is an arithmetic number, because the mean of its divisors is an integer number (519324625).

Almost surely, 2^2678621701 is an apocalyptic number.

It is an amenable number.

2678621701 is a deficient number, since it is larger than the sum of its proper divisors (437326049).

2678621701 is an equidigital number, since it uses as much as digits as its factorization.

2678621701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54665763 (or 54665756 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 2678621701 is about 51755.4026261993. The cubic root of 2678621701 is about 1388.7917490649.

The spelling of 2678621701 in words is "two billion, six hundred seventy-eight million, six hundred twenty-one thousand, seven hundred one".