7638953 has 8 divisors (see below), whose sum is σ = 8908800. Its totient is φ = 6547380.

The previous prime is 7638949. The next prime is 7638971. The reversal of 7638953 is 3598367.

It is not a de Polignac number, because 7638953 - 2² = 7638949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7638953.

It is not an unprimeable number, because it can be changed into a prime (7638973) 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 7 ways as a sum of consecutive naturals, for example, 10793 + ... + 11478.

It is an arithmetic number, because the mean of its divisors is an integer number (1113600).

Almost surely, 2^7638953 is an apocalyptic number.

It is an amenable number.

7638953 is a deficient number, since it is larger than the sum of its proper divisors (1269847).

7638953 is an equidigital number, since it uses as much as digits as its factorization.

7638953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22292 (or 22278 counting only the distinct ones).

The product of its digits is 136080, while the sum is 41.

The square root of 7638953 is about 2763.8655900749. The cubic root of 7638953 is about 196.9448427096.

The spelling of 7638953 in words is "seven million, six hundred thirty-eight thousand, nine hundred fifty-three".