2546406663 has 4 divisors (see below), whose sum is σ = 3395208888. Its totient is φ = 1697604440.

The previous prime is 2546406649. The next prime is 2546406673. The reversal of 2546406663 is 3666046452.

2546406663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2546406663 - 2⁸ = 2546406407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2546406673) 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, 424401108 + ... + 424401113.

It is an arithmetic number, because the mean of its divisors is an integer number (848802222).

Almost surely, 2^2546406663 is an apocalyptic number.

2546406663 is a deficient number, since it is larger than the sum of its proper divisors (848802225).

2546406663 is an equidigital number, since it uses as much as digits as its factorization.

2546406663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848802224.

The product of its (nonzero) digits is 622080, while the sum is 42.

The square root of 2546406663 is about 50461.9328107832. The cubic root of 2546406663 is about 1365.5551799789. Note that the first 3 decimals are identical.

The spelling of 2546406663 in words is "two billion, five hundred forty-six million, four hundred six thousand, six hundred sixty-three".