6124820861 has 4 divisors (see below), whose sum is σ = 6125033724. Its totient is φ = 6124608000.

The previous prime is 6124820837. The next prime is 6124820869. The reversal of 6124820861 is 1680284216.

It is a happy number.

6124820861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 603439225 + 5521381636 = 24565^2 + 74306^2 .

It is a cyclic number.

It is not a de Polignac number, because 6124820861 - 2⁶ = 6124820797 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 (6124820869) 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, 54980 + ... + 123581.

It is an arithmetic number, because the mean of its divisors is an integer number (1531258431).

Almost surely, 2^6124820861 is an apocalyptic number.

It is an amenable number.

6124820861 is a deficient number, since it is larger than the sum of its proper divisors (212863).

6124820861 is a wasteful number, since it uses less digits than its factorization.

6124820861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212862.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 6124820861 is about 78261.2347270346. The cubic root of 6124820861 is about 1829.6350174399.

The spelling of 6124820861 in words is "six billion, one hundred twenty-four million, eight hundred twenty thousand, eight hundred sixty-one".