10261645 has 4 divisors (see below), whose sum is σ = 12313980. Its totient is φ = 8209312.

The previous prime is 10261639. The next prime is 10261661. The reversal of 10261645 is 54616201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4888521 + 5373124 = 2211^2 + 2318^2 .

It is a cyclic number.

It is not a de Polignac number, because 10261645 - 2⁵ = 10261613 is a prime.

It is a super-3 number, since 3×10261645³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 1026160 + ... + 1026169.

It is an arithmetic number, because the mean of its divisors is an integer number (3078495).

Almost surely, 2^10261645 is an apocalyptic number.

It is an amenable number.

10261645 is a deficient number, since it is larger than the sum of its proper divisors (2052335).

10261645 is an equidigital number, since it uses as much as digits as its factorization.

10261645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052334.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 10261645 is about 3203.3802459277. The cubic root of 10261645 is about 217.3063057356.

Adding to 10261645 its reverse (54616201), we get a palindrome (64877846).

It can be divided in two parts, 1026164 and 5, that added together give a square (1026169 = 1013²).

The spelling of 10261645 in words is "ten million, two hundred sixty-one thousand, six hundred forty-five".