3609987 has 4 divisors (see below), whose sum is σ = 4813320. Its totient is φ = 2406656.

The previous prime is 3609973. The next prime is 3609997. The reversal of 3609987 is 7899063.

It is a happy number.

3609987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3609987 - 2⁸ = 3609731 is a prime.

It is a super-2 number, since 2×3609987² = 26064012280338, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (3609997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601662 + ... + 601667.

It is an arithmetic number, because the mean of its divisors is an integer number (1203330).

Almost surely, 2^3609987 is an apocalyptic number.

3609987 is a deficient number, since it is larger than the sum of its proper divisors (1203333).

3609987 is a wasteful number, since it uses less digits than its factorization.

3609987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203332.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 3609987 is about 1899.9965789443. The cubic root of 3609987 is about 153.4034802966.

The spelling of 3609987 in words is "three million, six hundred nine thousand, nine hundred eighty-seven".