2577963 has 4 divisors (see below), whose sum is σ = 3437288. Its totient is φ = 1718640.

The previous prime is 2577947. The next prime is 2577989. The reversal of 2577963 is 3697752.

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

It is not a de Polignac number, because 2577963 - 2⁴ = 2577947 is a prime.

It is a D-number.

It is a Duffinian number.

2577963 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2577923) 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, 429658 + ... + 429663.

It is an arithmetic number, because the mean of its divisors is an integer number (859322).

2^2577963 is an apocalyptic number.

2577963 is a deficient number, since it is larger than the sum of its proper divisors (859325).

2577963 is an equidigital number, since it uses as much as digits as its factorization.

2577963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859324.

The product of its digits is 79380, while the sum is 39.

The square root of 2577963 is about 1605.6036248091. The cubic root of 2577963 is about 137.1172917065.

The spelling of 2577963 in words is "two million, five hundred seventy-seven thousand, nine hundred sixty-three".