1406656243 has 2 divisors, whose sum is σ = 1406656244. Its totient is φ = 1406656242.

The previous prime is 1406656171. The next prime is 1406656283. The reversal of 1406656243 is 3426566041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1406656243 - 2²⁵ = 1373101811 is a prime.

It is not a weakly prime, because it can be changed into another prime (1406656283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703328121 + 703328122.

It is an arithmetic number, because the mean of its divisors is an integer number (703328122).

Almost surely, 2^1406656243 is an apocalyptic number.

1406656243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406656243 is an equidigital number, since it uses as much as digits as its factorization.

1406656243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 1406656243 is about 37505.4161821996. The cubic root of 1406656243 is about 1120.4590600632.

The spelling of 1406656243 in words is "one billion, four hundred six million, six hundred fifty-six thousand, two hundred forty-three".