2065545 has 24 divisors (see below), whose sum is σ = 3613896. Its totient is φ = 1091328.

The previous prime is 2065523. The next prime is 2065559. The reversal of 2065545 is 5455602.

2065545 is a `hidden beast` number, since 2 + 0 + 655 + 4 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 447561 + 1617984 = 669^2 + 1272^2 .

It is not a de Polignac number, because 2065545 - 2⁷ = 2065417 is a prime.

It is a super-2 number, since 2×2065545² = 8532952294050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8749 + ... + 8981.

It is an arithmetic number, because the mean of its divisors is an integer number (150579).

2^2065545 is an apocalyptic number.

It is an amenable number.

2065545 is a deficient number, since it is larger than the sum of its proper divisors (1548351).

2065545 is a wasteful number, since it uses less digits than its factorization.

2065545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 2065545 is about 1437.2004035624. The cubic root of 2065545 is about 127.3536960816.

The spelling of 2065545 in words is "two million, sixty-five thousand, five hundred forty-five".