7657938 has 12 divisors (see below), whose sum is σ = 16592238. Its totient is φ = 2552640.

The previous prime is 7657933. The next prime is 7657963. The reversal of 7657938 is 8397567.

It is a happy number.

7657938 is a `hidden beast` number, since 76 + 579 + 3 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6671889 + 986049 = 2583^2 + 993^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7657893 and 7657902.

It is not an unprimeable number, because it can be changed into a prime (7657933) 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 5 ways as a sum of consecutive naturals, for example, 212703 + ... + 212738.

Almost surely, 2^7657938 is an apocalyptic number.

7657938 is an abundant number, since it is smaller than the sum of its proper divisors (8934300).

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

7657938 is a wasteful number, since it uses less digits than its factorization.

7657938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425449 (or 425446 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 7657938 is about 2767.2979601048. The cubic root of 7657938 is about 197.1078626336.

The spelling of 7657938 in words is "seven million, six hundred fifty-seven thousand, nine hundred thirty-eight".