6287869961 has 2 divisors, whose sum is σ = 6287869962. Its totient is φ = 6287869960.

The previous prime is 6287869909. The next prime is 6287869963. The reversal of 6287869961 is 1699687826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6259183225 + 28686736 = 79115^2 + 5356^2 .

It is a cyclic number.

It is not a de Polignac number, because 6287869961 - 2²⁶ = 6220761097 is a prime.

It is a super-2 number, since 2×6287869961² = 79074617292892283042, which contains 22 as substring.

Together with 6287869963, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6287869894 and 6287869903.

It is not a weakly prime, because it can be changed into another prime (6287869963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3143934980 + 3143934981.

It is an arithmetic number, because the mean of its divisors is an integer number (3143934981).

Almost surely, 2^6287869961 is an apocalyptic number.

It is an amenable number.

6287869961 is a deficient number, since it is larger than the sum of its proper divisors (1).

6287869961 is an equidigital number, since it uses as much as digits as its factorization.

6287869961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 62.

The square root of 6287869961 is about 79296.0904521780. The cubic root of 6287869961 is about 1845.7286371296.

The spelling of 6287869961 in words is "six billion, two hundred eighty-seven million, eight hundred sixty-nine thousand, nine hundred sixty-one".