7638764 has 12 divisors (see below), whose sum is σ = 15277584. Its totient is φ = 3273744.

The previous prime is 7638733. The next prime is 7638767. The reversal of 7638764 is 4678367.

7638764 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (7638767) 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, 136379 + ... + 136434.

It is an arithmetic number, because the mean of its divisors is an integer number (1273132).

Almost surely, 2^7638764 is an apocalyptic number.

It is an amenable number.

7638764 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7638764 is a wasteful number, since it uses less digits than its factorization.

7638764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272824 (or 272822 counting only the distinct ones).

The product of its digits is 169344, while the sum is 41.

The square root of 7638764 is about 2763.8313986204. The cubic root of 7638764 is about 196.9432184520.

It can be divided in two parts, 763876 and 4, that multiplied together give a square (3055504 = 1748²).

The spelling of 7638764 in words is "seven million, six hundred thirty-eight thousand, seven hundred sixty-four".