7643693 has 4 divisors (see below), whose sum is σ = 8093340. Its totient is φ = 7194048.

The previous prime is 7643687. The next prime is 7643707. The reversal of 7643693 is 3963467.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7038409 + 605284 = 2653^2 + 778^2 .

It is a cyclic number.

It is not a de Polignac number, because 7643693 - 2⁴ = 7643677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7643633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224798 + ... + 224831.

It is an arithmetic number, because the mean of its divisors is an integer number (2023335).

Almost surely, 2^7643693 is an apocalyptic number.

It is an amenable number.

7643693 is a deficient number, since it is larger than the sum of its proper divisors (449647).

7643693 is a wasteful number, since it uses less digits than its factorization.

7643693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449646.

The product of its digits is 81648, while the sum is 38.

The square root of 7643693 is about 2764.7229517621. The cubic root of 7643693 is about 196.9855693003.

The spelling of 7643693 in words is "seven million, six hundred forty-three thousand, six hundred ninety-three".