2642447 has 4 divisors (see below), whose sum is σ = 2757360. Its totient is φ = 2527536.

The previous prime is 2642389. The next prime is 2642449. The reversal of 2642447 is 7442462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2642447 - 2⁶ = 2642383 is a prime.

It is a super-2 number, since 2×2642447² = 13965052295618, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁹ + 6² + 4 + 2²¹ + 4³ + 4⁶ + 7⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2642449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57422 + ... + 57467.

It is an arithmetic number, because the mean of its divisors is an integer number (689340).

2^2642447 is an apocalyptic number.

2642447 is a deficient number, since it is larger than the sum of its proper divisors (114913).

2642447 is a wasteful number, since it uses less digits than its factorization.

2642447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114912.

The product of its digits is 10752, while the sum is 29.

The square root of 2642447 is about 1625.5605187135. The cubic root of 2642447 is about 138.2511529432.

The spelling of 2642447 in words is "two million, six hundred forty-two thousand, four hundred forty-seven".