1406608081 has 2 divisors, whose sum is σ = 1406608082. Its totient is φ = 1406608080.

The previous prime is 1406608039. The next prime is 1406608087. The reversal of 1406608081 is 1808066041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1127885056 + 278723025 = 33584^2 + 16695^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406608081 - 2⁷ = 1406607953 is a prime.

It is a super-2 number, since 2×1406608081² = 3957092587069005122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1406608087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703304040 + 703304041.

It is an arithmetic number, because the mean of its divisors is an integer number (703304041).

Almost surely, 2^1406608081 is an apocalyptic number.

It is an amenable number.

1406608081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406608081 is an equidigital number, since it uses as much as digits as its factorization.

1406608081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 1406608081 is about 37504.7741094384. The cubic root of 1406608081 is about 1120.4462722516.

The spelling of 1406608081 in words is "one billion, four hundred six million, six hundred eight thousand, eighty-one".