10257645 has 8 divisors (see below), whose sum is σ = 16412256. Its totient is φ = 5470736.

The previous prime is 10257631. The next prime is 10257649. The reversal of 10257645 is 54675201.

10257645 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10257645 - 2⁴ = 10257629 is a prime.

It is a super-3 number, since 3×10257645³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10257649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341907 + ... + 341936.

It is an arithmetic number, because the mean of its divisors is an integer number (2051532).

Almost surely, 2^10257645 is an apocalyptic number.

10257645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10257645 is a deficient number, since it is larger than the sum of its proper divisors (6154611).

10257645 is an equidigital number, since it uses as much as digits as its factorization.

10257645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683851.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 10257645 is about 3202.7558445814. The cubic root of 10257645 is about 217.2780666574.

The spelling of 10257645 in words is "ten million, two hundred fifty-seven thousand, six hundred forty-five".