7503985 has 4 divisors (see below), whose sum is σ = 9004788. Its totient is φ = 6003184.

The previous prime is 7503983. The next prime is 7503989. The reversal of 7503985 is 5893057.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3370896 + 4133089 = 1836^2 + 2033^2 .

It is a cyclic number.

It is not a de Polignac number, because 7503985 - 2¹ = 7503983 is a prime.

It is a Duffinian number.

7503985 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7503983) 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, 750394 + ... + 750403.

It is an arithmetic number, because the mean of its divisors is an integer number (2251197).

Almost surely, 2^7503985 is an apocalyptic number.

It is an amenable number.

7503985 is a deficient number, since it is larger than the sum of its proper divisors (1500803).

7503985 is a wasteful number, since it uses less digits than its factorization.

7503985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1500802.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 7503985 is about 2739.3402490381. The cubic root of 7503985 is about 195.7780442480.

The spelling of 7503985 in words is "seven million, five hundred three thousand, nine hundred eighty-five".