2559616 has 16 divisors (see below), whose sum is σ = 5099490. Its totient is φ = 1279744.

The previous prime is 2559611. The next prime is 2559617. The reversal of 2559616 is 6169552.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1742400 + 817216 = 1320^2 + 904^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (2559611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9871 + ... + 10126.

2^2559616 is an apocalyptic number.

It is an amenable number.

2559616 is a deficient number, since it is larger than the sum of its proper divisors (2539874).

2559616 is an equidigital number, since it uses as much as digits as its factorization.

2559616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20011 (or 19999 counting only the distinct ones).

The product of its digits is 16200, while the sum is 34.

The square root of 2559616 is about 1599.8799954997. The cubic root of 2559616 is about 136.7912354883.

The spelling of 2559616 in words is "two million, five hundred fifty-nine thousand, six hundred sixteen".