2523646 has 4 divisors (see below), whose sum is σ = 3785472. Its totient is φ = 1261822.

The previous prime is 2523643. The next prime is 2523671. The reversal of 2523646 is 6463252.

It is a happy number.

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

It is a d-powerful number, because it can be written as 2¹⁷ + 5³ + 2²¹ + 3⁸ + 6⁵ + 4⁵ + 6⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2523641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630910 + ... + 630913.

It is an arithmetic number, because the mean of its divisors is an integer number (946368).

2^2523646 is an apocalyptic number.

2523646 is a deficient number, since it is larger than the sum of its proper divisors (1261826).

2523646 is a wasteful number, since it uses less digits than its factorization.

2523646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261825.

The product of its digits is 8640, while the sum is 28.

The square root of 2523646 is about 1588.5987536191. The cubic root of 2523646 is about 136.1474395818.

Adding to 2523646 its reverse (6463252), we get a palindrome (8986898).

The spelling of 2523646 in words is "two million, five hundred twenty-three thousand, six hundred forty-six".