3997305685 has 8 divisors (see below), whose sum is σ = 4797146016. Its totient is φ = 3197591760.

The previous prime is 3997305643. The next prime is 3997305713. The reversal of 3997305685 is 5865037993.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3997305685 - 2²⁷ = 3863087957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64602 + ... + 110308.

It is an arithmetic number, because the mean of its divisors is an integer number (599643252).

Almost surely, 2^3997305685 is an apocalyptic number.

It is an amenable number.

3997305685 is a deficient number, since it is larger than the sum of its proper divisors (799840331).

3997305685 is a wasteful number, since it uses less digits than its factorization.

3997305685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63203.

The product of its (nonzero) digits is 6123600, while the sum is 55.

The square root of 3997305685 is about 63224.2491849449. The cubic root of 3997305685 is about 1587.0445587087.

The spelling of 3997305685 in words is "three billion, nine hundred ninety-seven million, three hundred five thousand, six hundred eighty-five".