2657656 has 8 divisors (see below), whose sum is σ = 4983120. Its totient is φ = 1328824.

The previous prime is 2657651. The next prime is 2657657. The reversal of 2657656 is 6567562.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2657651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166096 + ... + 166111.

It is an arithmetic number, because the mean of its divisors is an integer number (622890).

2^2657656 is an apocalyptic number.

It is an amenable number.

2657656 is a deficient number, since it is larger than the sum of its proper divisors (2325464).

2657656 is a wasteful number, since it uses less digits than its factorization.

2657656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332213 (or 332209 counting only the distinct ones).

The product of its digits is 75600, while the sum is 37.

The square root of 2657656 is about 1630.2318853464. The cubic root of 2657656 is about 138.5158874327.

It can be divided in two parts, 265 and 7656, that added together give a square (7921 = 89²).

The spelling of 2657656 in words is "two million, six hundred fifty-seven thousand, six hundred fifty-six".