7685638 has 8 divisors (see below), whose sum is σ = 11926080. Its totient is φ = 3710280.

The previous prime is 7685627. The next prime is 7685641. The reversal of 7685638 is 8365867.

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

It is a junction number, because it is equal to n+sod(n) for n = 7685594 and 7685603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66198 + ... + 66313.

It is an arithmetic number, because the mean of its divisors is an integer number (1490760).

Almost surely, 2^7685638 is an apocalyptic number.

7685638 is a deficient number, since it is larger than the sum of its proper divisors (4240442).

7685638 is a wasteful number, since it uses less digits than its factorization.

7685638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132542.

The product of its digits is 241920, while the sum is 43.

The square root of 7685638 is about 2772.2983244954. The cubic root of 7685638 is about 197.3452336637.

The spelling of 7685638 in words is "seven million, six hundred eighty-five thousand, six hundred thirty-eight".