2578066 has 12 divisors (see below), whose sum is σ = 3935898. Its totient is φ = 1266432.

The previous prime is 2578061. The next prime is 2578087. The reversal of 2578066 is 6608752.

2578066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2187441 + 390625 = 1479^2 + 625^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2578061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18750 + ... + 18886.

2^2578066 is an apocalyptic number.

2578066 is a deficient number, since it is larger than the sum of its proper divisors (1357832).

2578066 is an equidigital number, since it uses as much as digits as its factorization.

2578066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 2578066 is about 1605.6356996529. The cubic root of 2578066 is about 137.1191178114.

The spelling of 2578066 in words is "two million, five hundred seventy-eight thousand, sixty-six".