2546645 has 4 divisors (see below), whose sum is σ = 3055980. Its totient is φ = 2037312.

The previous prime is 2546611. The next prime is 2546657. The reversal of 2546645 is 5466452.

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

It can be written as a sum of positive squares in 2 ways, for example, as 538756 + 2007889 = 734^2 + 1417^2 .

It is a cyclic number.

It is not a de Polignac number, because 2546645 - 2⁶ = 2546581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254660 + ... + 254669.

It is an arithmetic number, because the mean of its divisors is an integer number (763995).

2^2546645 is an apocalyptic number.

It is an amenable number.

2546645 is a deficient number, since it is larger than the sum of its proper divisors (509335).

2546645 is an equidigital number, since it uses as much as digits as its factorization.

2546645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509334.

The product of its digits is 28800, while the sum is 32.

The square root of 2546645 is about 1595.8211052621. The cubic root of 2546645 is about 136.5597782780.

The spelling of 2546645 in words is "two million, five hundred forty-six thousand, six hundred forty-five".