3261987 has 6 divisors (see below), whose sum is σ = 4711772. Its totient is φ = 2174652.

The previous prime is 3261967. The next prime is 3262003. The reversal of 3261987 is 7891623.

3261987 is a `hidden beast` number, since 32 + 619 + 8 + 7 = 666.

It is not a de Polignac number, because 3261987 - 2¹⁹ = 2737699 is a prime.

It is a Duffinian number.

3261987 is a lucky number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (3261967) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 181213 + ... + 181230.

Almost surely, 2^3261987 is an apocalyptic number.

3261987 is a deficient number, since it is larger than the sum of its proper divisors (1449785).

3261987 is a wasteful number, since it uses less digits than its factorization.

3261987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362449 (or 362446 counting only the distinct ones).

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

The square root of 3261987 is about 1806.0971734655. The cubic root of 3261987 is about 148.3066899361.

The spelling of 3261987 in words is "three million, two hundred sixty-one thousand, nine hundred eighty-seven".