3531987 has 6 divisors (see below), whose sum is σ = 5101772. Its totient is φ = 2354652.

The previous prime is 3531911. The next prime is 3531989. The reversal of 3531987 is 7891353.

It is a de Polignac number, because none of the positive numbers 2^k-3531987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3531989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 196213 + ... + 196230.

Almost surely, 2^3531987 is an apocalyptic number.

3531987 is a deficient number, since it is larger than the sum of its proper divisors (1569785).

3531987 is a wasteful number, since it uses less digits than its factorization.

3531987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392449 (or 392446 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 3531987 is about 1879.3581351089. The cubic root of 3531987 is about 152.2905770012.

The spelling of 3531987 in words is "three million, five hundred thirty-one thousand, nine hundred eighty-seven".