2406686881 has 2 divisors, whose sum is σ = 2406686882. Its totient is φ = 2406686880.

The previous prime is 2406686879. The next prime is 2406686917. The reversal of 2406686881 is 1886866042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1414436881 + 992250000 = 37609^2 + 31500^2 .

It is a cyclic number.

It is not a de Polignac number, because 2406686881 - 2¹ = 2406686879 is a prime.

It is a super-2 number, since 2×2406686881² = 11584283486355016322, which contains 22 as substring.

Together with 2406686879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2406686831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1203343440 + 1203343441.

It is an arithmetic number, because the mean of its divisors is an integer number (1203343441).

Almost surely, 2^2406686881 is an apocalyptic number.

It is an amenable number.

2406686881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2406686881 is an equidigital number, since it uses as much as digits as its factorization.

2406686881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 884736, while the sum is 49.

The square root of 2406686881 is about 49057.9950772552. The cubic root of 2406686881 is about 1340.1081966916.

The spelling of 2406686881 in words is "two billion, four hundred six million, six hundred eighty-six thousand, eight hundred eighty-one".