7643936 has 24 divisors (see below), whose sum is σ = 15569820. Its totient is φ = 3689728.

The previous prime is 7643927. The next prime is 7643953. The reversal of 7643936 is 6393467.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7595536 + 48400 = 2756^2 + 220^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7643936.

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, 3191 + ... + 5046.

Almost surely, 2^7643936 is an apocalyptic number.

It is an amenable number.

7643936 is an abundant number, since it is smaller than the sum of its proper divisors (7925884).

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

7643936 is a wasteful number, since it uses less digits than its factorization.

7643936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8276 (or 8268 counting only the distinct ones).

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

The square root of 7643936 is about 2764.7668979500. The cubic root of 7643936 is about 196.9876567288.

The spelling of 7643936 in words is "seven million, six hundred forty-three thousand, nine hundred thirty-six".