3997635 has 32 divisors (see below), whose sum is σ = 6910272. Its totient is φ = 1966080.

The previous prime is 3997603. The next prime is 3997639. The reversal of 3997635 is 5367993.

3997635 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 3997635 - 2⁵ = 3997603 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3997639) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15427 + ... + 15683.

It is an arithmetic number, because the mean of its divisors is an integer number (215946).

Almost surely, 2^3997635 is an apocalyptic number.

3997635 is a deficient number, since it is larger than the sum of its proper divisors (2912637).

3997635 is a wasteful number, since it uses less digits than its factorization.

3997635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343.

The product of its digits is 153090, while the sum is 42.

The square root of 3997635 is about 1999.4086625800. The cubic root of 3997635 is about 158.7088140000.

The spelling of 3997635 in words is "three million, nine hundred ninety-seven thousand, six hundred thirty-five".