3985735667 has 2 divisors, whose sum is σ = 3985735668. Its totient is φ = 3985735666.

The previous prime is 3985735651. The next prime is 3985735681. The reversal of 3985735667 is 7665375893.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3985735667 - 2⁴ = 3985735651 is a prime.

It is not a weakly prime, because it can be changed into another prime (3985735267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1992867833 + 1992867834.

It is an arithmetic number, because the mean of its divisors is an integer number (1992867834).

Almost surely, 2^3985735667 is an apocalyptic number.

3985735667 is a deficient number, since it is larger than the sum of its proper divisors (1).

3985735667 is an equidigital number, since it uses as much as digits as its factorization.

3985735667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28576800, while the sum is 59.

The square root of 3985735667 is about 63132.6830334336. The cubic root of 3985735667 is about 1585.5118697576.

The spelling of 3985735667 in words is "three billion, nine hundred eighty-five million, seven hundred thirty-five thousand, six hundred sixty-seven".