7640806 has 8 divisors (see below), whose sum is σ = 11475360. Its totient is φ = 3815688.

The previous prime is 7640777. The next prime is 7640821. The reversal of 7640806 is 6080467.

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

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 3 ways as a sum of consecutive naturals, for example, 240 + ... + 3916.

It is an arithmetic number, because the mean of its divisors is an integer number (1434420).

Almost surely, 2^7640806 is an apocalyptic number.

7640806 is a deficient number, since it is larger than the sum of its proper divisors (3834554).

7640806 is a wasteful number, since it uses less digits than its factorization.

7640806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 7640806 is about 2764.2007886548. The cubic root of 7640806 is about 196.9607658904.

The spelling of 7640806 in words is "seven million, six hundred forty thousand, eight hundred six".