2665557 has 12 divisors (see below), whose sum is σ = 3885804. Its totient is φ = 1760640.

The previous prime is 2665547. The next prime is 2665589. The reversal of 2665557 is 7555662.

It can be written as a sum of positive squares in 2 ways, for example, as 938961 + 1726596 = 969^2 + 1314^2 .

It is not a de Polignac number, because 2665557 - 2¹⁰ = 2664533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 294 + ... + 2327.

It is an arithmetic number, because the mean of its divisors is an integer number (323817).

2^2665557 is an apocalyptic number.

It is an amenable number.

2665557 is a deficient number, since it is larger than the sum of its proper divisors (1220247).

2665557 is a wasteful number, since it uses less digits than its factorization.

2665557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740 (or 2737 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 2665557 is about 1632.6533618622. The cubic root of 2665557 is about 138.6530172041.

The spelling of 2665557 in words is "two million, six hundred sixty-five thousand, five hundred fifty-seven".