4001335685 has 16 divisors (see below), whose sum is σ = 5104373760. Its totient is φ = 3002558400.

The previous prime is 4001335669. The next prime is 4001335703. The reversal of 4001335685 is 5865331004.

It is not a de Polignac number, because 4001335685 - 2⁴ = 4001335669 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198917 + ... + 218106.

It is an arithmetic number, because the mean of its divisors is an integer number (319023360).

Almost surely, 2^4001335685 is an apocalyptic number.

It is an amenable number.

4001335685 is a deficient number, since it is larger than the sum of its proper divisors (1103038075).

4001335685 is a wasteful number, since it uses less digits than its factorization.

4001335685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417148.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 4001335685 is about 63256.1118390943. Note that the first 3 decimals coincide. The cubic root of 4001335685 is about 1587.5777212863.

Adding to 4001335685 its reverse (5865331004), we get a palindrome (9866666689).

The spelling of 4001335685 in words is "four billion, one million, three hundred thirty-five thousand, six hundred eighty-five".