2646047 has 4 divisors (see below), whose sum is σ = 2737320. Its totient is φ = 2554776.

The previous prime is 2646041. The next prime is 2646071. The reversal of 2646047 is 7406462.

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 2646047 - 2¹⁶ = 2580511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 91243 = 2646047 / (2 + 6 + 4 + 6 + 0 + 4 + 7).

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646041) 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, 45593 + ... + 45650.

It is an arithmetic number, because the mean of its divisors is an integer number (684330).

2^2646047 is an apocalyptic number.

2646047 is a deficient number, since it is larger than the sum of its proper divisors (91273).

2646047 is an equidigital number, since it uses as much as digits as its factorization.

2646047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91272.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 2646047 is about 1626.6674521856. The cubic root of 2646047 is about 138.3139076931.

The spelling of 2646047 in words is "two million, six hundred forty-six thousand, forty-seven".