2689773681 has 8 divisors (see below), whose sum is σ = 4098702784. Its totient is φ = 1537013520.

The previous prime is 2689773641. The next prime is 2689773731. The reversal of 2689773681 is 1863779862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2689773681 - 2¹¹ = 2689771633 is a prime.

It is a super-2 number, since 2×2689773681² = 14469764910000579522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2689773641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64042210 + ... + 64042251.

It is an arithmetic number, because the mean of its divisors is an integer number (512337848).

Almost surely, 2^2689773681 is an apocalyptic number.

2689773681 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2689773681 is a deficient number, since it is larger than the sum of its proper divisors (1408929103).

2689773681 is a wasteful number, since it uses less digits than its factorization.

2689773681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128084471.

The product of its digits is 6096384, while the sum is 57.

The square root of 2689773681 is about 51863.0280739565. The cubic root of 2689773681 is about 1390.7164122620.

The spelling of 2689773681 in words is "two billion, six hundred eighty-nine million, seven hundred seventy-three thousand, six hundred eighty-one".