2721069 has 18 divisors (see below), whose sum is σ = 4258410. Its totient is φ = 1673568.

The previous prime is 2721067. The next prime is 2721109. The reversal of 2721069 is 9601272.

It can be written as a sum of positive squares in 3 ways, for example, as 202500 + 2518569 = 450^2 + 1587^2 .

It is not a de Polignac number, because 2721069 - 2¹ = 2721067 is a prime.

It is a super-2 number, since 2×2721069² = 14808433005522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721067) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 627 + ... + 2415.

2^2721069 is an apocalyptic number.

It is an amenable number.

2721069 is a deficient number, since it is larger than the sum of its proper divisors (1537341).

2721069 is a wasteful number, since it uses less digits than its factorization.

2721069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821 (or 1805 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 2721069 is about 1649.5663066394. The cubic root of 2721069 is about 139.6089256012.

The spelling of 2721069 in words is "two million, seven hundred twenty-one thousand, sixty-nine".