2678881763 has 4 divisors (see below), whose sum is σ = 2819875560. Its totient is φ = 2537887968.

The previous prime is 2678881741. The next prime is 2678881781. The reversal of 2678881763 is 3671888762.

It is a happy number.

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 2678881763 - 2²⁶ = 2611772899 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2678881699 and 2678881708.

It is not an unprimeable number, because it can be changed into a prime (2678871763) 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, 70496870 + ... + 70496907.

It is an arithmetic number, because the mean of its divisors is an integer number (704968890).

Almost surely, 2^2678881763 is an apocalyptic number.

2678881763 is a deficient number, since it is larger than the sum of its proper divisors (140993797).

2678881763 is a wasteful number, since it uses less digits than its factorization.

2678881763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140993796.

The product of its digits is 5419008, while the sum is 56.

The square root of 2678881763 is about 51757.9149792570. The cubic root of 2678881763 is about 1388.8366926107.

The spelling of 2678881763 in words is "two billion, six hundred seventy-eight million, eight hundred eighty-one thousand, seven hundred sixty-three".