7645806 has 64 divisors (see below), whose sum is σ = 19699200. Its totient is φ = 2153088.

The previous prime is 7645789. The next prime is 7645817. The reversal of 7645806 is 6085467.

It is a happy number.

7645806 is a `hidden beast` number, since 7 + 645 + 8 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42625 + ... + 42803.

It is an arithmetic number, because the mean of its divisors is an integer number (307800).

Almost surely, 2^7645806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7645806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9849600).

7645806 is an abundant number, since it is smaller than the sum of its proper divisors (12053394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7645806 is a wasteful number, since it uses less digits than its factorization.

7645806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 7645806 is about 2765.1050612951. The cubic root of 7645806 is about 197.0037189984.

The spelling of 7645806 in words is "seven million, six hundred forty-five thousand, eight hundred six".