10345681 has 4 divisors (see below), whose sum is σ = 10625332. Its totient is φ = 10066032.

The previous prime is 10345679. The next prime is 10345693. The reversal of 10345681 is 18654301.

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 9363600 + 982081 = 3060^2 + 991^2 .

It is a cyclic number.

It is not a de Polignac number, because 10345681 - 2¹ = 10345679 is a prime.

It is a super-2 number, since 2×10345681² = 214066230707522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10345651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139770 + ... + 139843.

It is an arithmetic number, because the mean of its divisors is an integer number (2656333).

Almost surely, 2^10345681 is an apocalyptic number.

It is an amenable number.

10345681 is a deficient number, since it is larger than the sum of its proper divisors (279651).

10345681 is an equidigital number, since it uses as much as digits as its factorization.

10345681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279650.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 10345681 is about 3216.4702703429. The cubic root of 10345681 is about 217.8978914679.

Adding to 10345681 its reverse (18654301), we get a palindrome (28999982).

It can be divided in two parts, 10345 and 681, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 10345681 in words is "ten million, three hundred forty-five thousand, six hundred eighty-one".