6713772781 has 8 divisors (see below), whose sum is σ = 6835620960. Its totient is φ = 6592193232.

The previous prime is 6713772701. The next prime is 6713772799. The reversal of 6713772781 is 1872773176.

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

It is a cyclic number.

It is not a de Polignac number, because 6713772781 - 2¹¹ = 6713770733 is a prime.

It is a super-2 number, since 2×6713772781² = 90149489909792947922, which contains 22 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 (6713772701) 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, 16375 + ... + 117028.

It is an arithmetic number, because the mean of its divisors is an integer number (854452620).

Almost surely, 2^6713772781 is an apocalyptic number.

It is an amenable number.

6713772781 is a deficient number, since it is larger than the sum of its proper divisors (121848179).

6713772781 is a wasteful number, since it uses less digits than its factorization.

6713772781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134315.

The product of its digits is 691488, while the sum is 49.

The square root of 6713772781 is about 81937.6151776460. The cubic root of 6713772781 is about 1886.4945129031.

The spelling of 6713772781 in words is "six billion, seven hundred thirteen million, seven hundred seventy-two thousand, seven hundred eighty-one".