3687975 has 36 divisors (see below), whose sum is σ = 6799416. Its totient is φ = 1909440.

The previous prime is 3687973. The next prime is 3687979. The reversal of 3687975 is 5797863.

It is a happy number.

It is not a de Polignac number, because 3687975 - 2¹ = 3687973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3687975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3687973) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8104 + ... + 8546.

Almost surely, 2^3687975 is an apocalyptic number.

3687975 is a deficient number, since it is larger than the sum of its proper divisors (3111441).

3687975 is a wasteful number, since it uses less digits than its factorization.

3687975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 488 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 3687975 is about 1920.4101124499. The cubic root of 3687975 is about 154.5002984881.

The spelling of 3687975 in words is "three million, six hundred eighty-seven thousand, nine hundred seventy-five".