3201688 has 16 divisors (see below), whose sum is σ = 6860880. Its totient is φ = 1372128.

The previous prime is 3201643. The next prime is 3201689. The reversal of 3201688 is 8861023.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28531 + ... + 28642.

It is an arithmetic number, because the mean of its divisors is an integer number (428805).

Almost surely, 2^3201688 is an apocalyptic number.

It is an amenable number.

3201688 is an abundant number, since it is smaller than the sum of its proper divisors (3659192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3201688 is a wasteful number, since it uses less digits than its factorization.

3201688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57186 (or 57182 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 3201688 is about 1789.3261301395. The cubic root of 3201688 is about 147.3871664125.

The spelling of 3201688 in words is "three million, two hundred one thousand, six hundred eighty-eight".