3087721 has 8 divisors (see below), whose sum is σ = 3800384. Its totient is φ = 2442960.

The previous prime is 3087703. The next prime is 3087731. The reversal of 3087721 is 1277803.

It is a happy number.

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

It is not a de Polignac number, because 3087721 - 2⁹ = 3087209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3087721.

It is not an unprimeable number, because it can be changed into a prime (3087731) 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 7 ways as a sum of consecutive naturals, for example, 16875 + ... + 17056.

It is an arithmetic number, because the mean of its divisors is an integer number (475048).

Almost surely, 2^3087721 is an apocalyptic number.

It is an amenable number.

3087721 is a deficient number, since it is larger than the sum of its proper divisors (712663).

3087721 is a wasteful number, since it uses less digits than its factorization.

3087721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33951.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 3087721 is about 1757.1912246537. The cubic root of 3087721 is about 145.6172026378.

The spelling of 3087721 in words is "three million, eighty-seven thousand, seven hundred twenty-one".