2002647 has 4 divisors (see below), whose sum is σ = 2670200. Its totient is φ = 1335096.

The previous prime is 2002643. The next prime is 2002661. The reversal of 2002647 is 7462002.

It is a happy number.

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

It is not a de Polignac number, because 2002647 - 2² = 2002643 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

2002647 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002643) 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, 333772 + ... + 333777.

It is an arithmetic number, because the mean of its divisors is an integer number (667550).

2^2002647 is an apocalyptic number.

2002647 is a deficient number, since it is larger than the sum of its proper divisors (667553).

2002647 is an equidigital number, since it uses as much as digits as its factorization.

2002647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667552.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 2002647 is about 1415.1491087514. The cubic root of 2002647 is about 126.0476640029.

Adding to 2002647 its reverse (7462002), we get a palindrome (9464649).

The spelling of 2002647 in words is "two million, two thousand, six hundred forty-seven".