3145987 has 8 divisors (see below), whose sum is σ = 3414320. Its totient is φ = 2881440.

The previous prime is 3145981. The next prime is 3145997. The reversal of 3145987 is 7895413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3145987 - 2¹⁹ = 2621699 is a prime.

It is a d-powerful number, because it can be written as 3 + 1 + 4¹⁰ + 5³ + 9² + 8⁷ + 7² .

It is not an unprimeable number, because it can be changed into a prime (3145981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 937 + ... + 2677.

It is an arithmetic number, because the mean of its divisors is an integer number (426790).

Almost surely, 2^3145987 is an apocalyptic number.

3145987 is a deficient number, since it is larger than the sum of its proper divisors (268333).

3145987 is a wasteful number, since it uses less digits than its factorization.

3145987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893.

The product of its digits is 30240, while the sum is 37.

The square root of 3145987 is about 1773.6930399593. The cubic root of 3145987 is about 146.5274442172.

The spelling of 3145987 in words is "three million, one hundred forty-five thousand, nine hundred eighty-seven".