2063509 has 4 divisors (see below), whose sum is σ = 2358304. Its totient is φ = 1768716.

The previous prime is 2063507. The next prime is 2063521. The reversal of 2063509 is 9053602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9053602 = 2 ⋅4526801.

It is a cyclic number.

It is not a de Polignac number, because 2063509 - 2¹ = 2063507 is a prime.

It is a Duffinian number.

2063509 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2063507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147387 + ... + 147400.

It is an arithmetic number, because the mean of its divisors is an integer number (589576).

2^2063509 is an apocalyptic number.

It is an amenable number.

2063509 is a deficient number, since it is larger than the sum of its proper divisors (294795).

2063509 is an equidigital number, since it uses as much as digits as its factorization.

2063509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294794.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 2063509 is about 1436.4919073911. The cubic root of 2063509 is about 127.3118383046.

The spelling of 2063509 in words is "two million, sixty-three thousand, five hundred nine".