7638699 has 4 divisors (see below), whose sum is σ = 10184936. Its totient is φ = 5092464.

The previous prime is 7638689. The next prime is 7638707. The reversal of 7638699 is 9968367.

It is a happy number.

7638699 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 7638699 - 2¹² = 7634603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7638619) by changing a digit.

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, 1273114 + ... + 1273119.

It is an arithmetic number, because the mean of its divisors is an integer number (2546234).

Almost surely, 2^7638699 is an apocalyptic number.

7638699 is a deficient number, since it is larger than the sum of its proper divisors (2546237).

7638699 is a wasteful number, since it uses less digits than its factorization.

7638699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546236.

The product of its digits is 489888, while the sum is 48.

The square root of 7638699 is about 2763.8196395568. The cubic root of 7638699 is about 196.9426598387.

The spelling of 7638699 in words is "seven million, six hundred thirty-eight thousand, six hundred ninety-nine".