4267856861 has 4 divisors (see below), whose sum is σ = 4268328924. Its totient is φ = 4267384800.

The previous prime is 4267856837. The next prime is 4267856881. The reversal of 4267856861 is 1686587624.

It is a happy number.

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 4135261636 + 132595225 = 64306^2 + 11515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4267856861 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 (4267856821) 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, 222200 + ... + 240641.

It is an arithmetic number, because the mean of its divisors is an integer number (1067082231).

Almost surely, 2^4267856861 is an apocalyptic number.

It is an amenable number.

4267856861 is a deficient number, since it is larger than the sum of its proper divisors (472063).

4267856861 is an equidigital number, since it uses as much as digits as its factorization.

4267856861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472062.

The product of its digits is 3870720, while the sum is 53.

The square root of 4267856861 is about 65328.8363664929. The cubic root of 4267856861 is about 1622.0713306809.

The spelling of 4267856861 in words is "four billion, two hundred sixty-seven million, eight hundred fifty-six thousand, eight hundred sixty-one".