2646106403 has 4 divisors (see below), whose sum is σ = 2649839280. Its totient is φ = 2642373528.

The previous prime is 2646106361. The next prime is 2646106429. The reversal of 2646106403 is 3046016462.

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 2646106403 - 2¹⁴ = 2646090019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2646106403.

It is not an unprimeable number, because it can be changed into a prime (2616106403) 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, 1865375 + ... + 1866792.

It is an arithmetic number, because the mean of its divisors is an integer number (662459820).

Almost surely, 2^2646106403 is an apocalyptic number.

2646106403 is a deficient number, since it is larger than the sum of its proper divisors (3732877).

2646106403 is an equidigital number, since it uses as much as digits as its factorization.

2646106403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3732876.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 2646106403 is about 51440.3188462125. The cubic root of 2646106403 is about 1383.1494272123.

The spelling of 2646106403 in words is "two billion, six hundred forty-six million, one hundred six thousand, four hundred three".