7638964 has 6 divisors (see below), whose sum is σ = 13368194. Its totient is φ = 3819480.

The previous prime is 7638949. The next prime is 7638971. The reversal of 7638964 is 4698367.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7606564 + 32400 = 2758^2 + 180^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7638964.

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 as a sum of consecutive naturals, namely, 954867 + ... + 954874.

Almost surely, 2^7638964 is an apocalyptic number.

It is an amenable number.

7638964 is a deficient number, since it is larger than the sum of its proper divisors (5729230).

7638964 is a wasteful number, since it uses less digits than its factorization.

7638964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909745 (or 1909743 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 7638964 is about 2763.8675800407. The cubic root of 7638964 is about 196.9449372423.

The spelling of 7638964 in words is "seven million, six hundred thirty-eight thousand, nine hundred sixty-four".