2643693 has 16 divisors (see below), whose sum is σ = 3870720. Its totient is φ = 1594944.

The previous prime is 2643691. The next prime is 2643709. The reversal of 2643693 is 3963462.

It is not a de Polignac number, because 2643693 - 2¹ = 2643691 is a prime.

It is a super-2 number, since 2×2643693² = 13978225356498, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2²¹ + 6 + 4⁹ + 3⁷ + 6⁷ + 9² + 3⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1428 + ... + 2706.

It is an arithmetic number, because the mean of its divisors is an integer number (241920).

2^2643693 is an apocalyptic number.

It is an amenable number.

2643693 is a deficient number, since it is larger than the sum of its proper divisors (1227027).

2643693 is a wasteful number, since it uses less digits than its factorization.

2643693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348.

The product of its digits is 23328, while the sum is 33.

The square root of 2643693 is about 1625.9437259635. The cubic root of 2643693 is about 138.2728795055.

The spelling of 2643693 in words is "two million, six hundred forty-three thousand, six hundred ninety-three".