5646431617 has 2 divisors, whose sum is σ = 5646431618. Its totient is φ = 5646431616.

The previous prime is 5646431597. The next prime is 5646431641. The reversal of 5646431617 is 7161346465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3923268496 + 1723163121 = 62636^2 + 41511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5646431617 is a prime.

It is not a weakly prime, because it can be changed into another prime (5646431117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2823215808 + 2823215809.

It is an arithmetic number, because the mean of its divisors is an integer number (2823215809).

Almost surely, 2^5646431617 is an apocalyptic number.

It is an amenable number.

5646431617 is a deficient number, since it is larger than the sum of its proper divisors (1).

5646431617 is an equidigital number, since it uses as much as digits as its factorization.

5646431617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 43.

The square root of 5646431617 is about 75142.7416122143. The cubic root of 5646431617 is about 1780.7024556730.

The spelling of 5646431617 in words is "five billion, six hundred forty-six million, four hundred thirty-one thousand, six hundred seventeen".