6122781 has 12 divisors (see below), whose sum is σ = 10107552. Its totient is φ = 3498696.

The previous prime is 6122777. The next prime is 6122791. The reversal of 6122781 is 1872216.

6122781 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6122781 - 2² = 6122777 is a prime.

It is a super-2 number, since 2×6122781² = 74976894347922, which contains 22 as substring.

6122781 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6122791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48531 + ... + 48656.

It is an arithmetic number, because the mean of its divisors is an integer number (842296).

Almost surely, 2^6122781 is an apocalyptic number.

It is an amenable number.

6122781 is a deficient number, since it is larger than the sum of its proper divisors (3984771).

6122781 is a wasteful number, since it uses less digits than its factorization.

6122781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97200 (or 97197 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 6122781 is about 2474.4253878426. The cubic root of 6122781 is about 182.9431875960.

Adding to 6122781 its reverse (1872216), we get a palindrome (7994997).

It can be divided in two parts, 6122 and 781, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 6122781 in words is "six million, one hundred twenty-two thousand, seven hundred eighty-one".