10638257 has 4 divisors (see below), whose sum is σ = 12158016. Its totient is φ = 9118500.

The previous prime is 10638241. The next prime is 10638263. The reversal of 10638257 is 75283601.

It is a happy number.

10638257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75283601 = 1801 ⋅41801.

It is a cyclic number.

It is not a de Polignac number, because 10638257 - 2⁴ = 10638241 is a prime.

It is a super-2 number, since 2×10638257² = 226345023996098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10638227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 759869 + ... + 759882.

It is an arithmetic number, because the mean of its divisors is an integer number (3039504).

Almost surely, 2^10638257 is an apocalyptic number.

It is an amenable number.

10638257 is a deficient number, since it is larger than the sum of its proper divisors (1519759).

10638257 is an equidigital number, since it uses as much as digits as its factorization.

10638257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519758.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 10638257 is about 3261.6340996501. The cubic root of 10638257 is about 219.9328789728.

The spelling of 10638257 in words is "ten million, six hundred thirty-eight thousand, two hundred fifty-seven".