7645385 has 12 divisors (see below), whose sum is σ = 10085124. Its totient is φ = 5559840.

The previous prime is 7645343. The next prime is 7645387. The reversal of 7645385 is 5835467.

It can be written as a sum of positive squares in 2 ways, for example, as 1628176 + 6017209 = 1276^2 + 2453^2 .

It is not a de Polignac number, because 7645385 - 2¹² = 7641289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7645387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5714 + ... + 6923.

It is an arithmetic number, because the mean of its divisors is an integer number (840427).

Almost surely, 2^7645385 is an apocalyptic number.

It is an amenable number.

7645385 is a deficient number, since it is larger than the sum of its proper divisors (2439739).

7645385 is a wasteful number, since it uses less digits than its factorization.

7645385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12664 (or 12653 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The square root of 7645385 is about 2765.0289329408. The cubic root of 7645385 is about 197.0001030688. Note that the first 3 decimals are identical.

The spelling of 7645385 in words is "seven million, six hundred forty-five thousand, three hundred eighty-five".