427664843 has 2 divisors, whose sum is σ = 427664844. Its totient is φ = 427664842.

The previous prime is 427664837. The next prime is 427664849. The reversal of 427664843 is 348466724.

It is a balanced prime because it is at equal distance from previous prime (427664837) and next prime (427664849).

It is a cyclic number.

It is not a de Polignac number, because 427664843 - 2¹² = 427660747 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 427664794 and 427664803.

It is not a weakly prime, because it can be changed into another prime (427664849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213832421 + 213832422.

It is an arithmetic number, because the mean of its divisors is an integer number (213832422).

Almost surely, 2^427664843 is an apocalyptic number.

427664843 is a deficient number, since it is larger than the sum of its proper divisors (1).

427664843 is an equidigital number, since it uses as much as digits as its factorization.

427664843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 44.

The square root of 427664843 is about 20680.0590666468. The cubic root of 427664843 is about 753.4154408161.

The spelling of 427664843 in words is "four hundred twenty-seven million, six hundred sixty-four thousand, eight hundred forty-three".