1406612261 has 2 divisors, whose sum is σ = 1406612262. Its totient is φ = 1406612260.

The previous prime is 1406612257. The next prime is 1406612267. The reversal of 1406612261 is 1622166041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1376855236 + 29757025 = 37106^2 + 5455^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406612261 - 2² = 1406612257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1406612267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703306130 + 703306131.

It is an arithmetic number, because the mean of its divisors is an integer number (703306131).

Almost surely, 2^1406612261 is an apocalyptic number.

It is an amenable number.

1406612261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406612261 is an equidigital number, since it uses as much as digits as its factorization.

1406612261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1406612261 is about 37504.8298356358. The cubic root of 1406612261 is about 1120.4473821226.

The spelling of 1406612261 in words is "one billion, four hundred six million, six hundred twelve thousand, two hundred sixty-one".