7664845 has 8 divisors (see below), whose sum is σ = 9515160. Its totient is φ = 5920320.

The previous prime is 7664821. The next prime is 7664849. The reversal of 7664845 is 5484667.

It can be written as a sum of positive squares in 4 ways, for example, as 1258884 + 6405961 = 1122^2 + 2531^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7664845 - 2⁷ = 7664717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7664798 and 7664807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7664849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26286 + ... + 26575.

It is an arithmetic number, because the mean of its divisors is an integer number (1189395).

Almost surely, 2^7664845 is an apocalyptic number.

It is an amenable number.

7664845 is a deficient number, since it is larger than the sum of its proper divisors (1850315).

7664845 is a wasteful number, since it uses less digits than its factorization.

7664845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52895.

The product of its digits is 161280, while the sum is 40.

The square root of 7664845 is about 2768.5456470862. The cubic root of 7664845 is about 197.1671046430.

The spelling of 7664845 in words is "seven million, six hundred sixty-four thousand, eight hundred forty-five".