10200645 has 96 divisors (see below), whose sum is σ = 22643712. Its totient is φ = 4133376.

The previous prime is 10200637. The next prime is 10200679. The reversal of 10200645 is 54600201.

It is a happy number.

10200645 is a `hidden beast` number, since 1 + 0 + 20 + 0 + 645 = 666.

10200645 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10200645 - 2³ = 10200637 is a prime.

10200645 is strictly pandigital in base 8.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 192439 + ... + 192491.

It is an arithmetic number, because the mean of its divisors is an integer number (235872).

Almost surely, 2^10200645 is an apocalyptic number.

10200645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10200645 is an abundant number, since it is smaller than the sum of its proper divisors (12443067).

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

10200645 is a wasteful number, since it uses less digits than its factorization.

10200645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 10200645 is about 3193.8448616049. The cubic root of 10200645 is about 216.8748597142.

Adding to 10200645 its reverse (54600201), we get a palindrome (64800846).

The spelling of 10200645 in words is "ten million, two hundred thousand, six hundred forty-five".