3987612 has 36 divisors (see below), whose sum is σ = 10142496. Its totient is φ = 1320960.

The previous prime is 3987593. The next prime is 3987629. The reversal of 3987612 is 2167893.

3987612 is a `hidden beast` number, since 39 + 8 + 7 + 612 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9037 + ... + 9467.

It is an arithmetic number, because the mean of its divisors is an integer number (281736).

Almost surely, 2^3987612 is an apocalyptic number.

It is an amenable number.

3987612 is an abundant number, since it is smaller than the sum of its proper divisors (6154884).

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

3987612 is a wasteful number, since it uses less digits than its factorization.

3987612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698 (or 693 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 3987612 is about 1996.9005984275. The cubic root of 3987612 is about 158.5760630320.

The spelling of 3987612 in words is "three million, nine hundred eighty-seven thousand, six hundred twelve".