10640347 has 4 divisors (see below), whose sum is σ = 10983616. Its totient is φ = 10297080.

The previous prime is 10640339. The next prime is 10640353. The reversal of 10640347 is 74304601.

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

It is a cyclic number.

It is not a de Polignac number, because 10640347 - 2³ = 10640339 is a prime.

It is a super-2 number, since 2×10640347² = 226433968560818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10640327) 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, 171588 + ... + 171649.

It is an arithmetic number, because the mean of its divisors is an integer number (2745904).

Almost surely, 2^10640347 is an apocalyptic number.

10640347 is a deficient number, since it is larger than the sum of its proper divisors (343269).

10640347 is an equidigital number, since it uses as much as digits as its factorization.

10640347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343268.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 10640347 is about 3261.9544754641. The cubic root of 10640347 is about 219.9472807562.

Adding to 10640347 its reverse (74304601), we get a palindrome (84944948).

The spelling of 10640347 in words is "ten million, six hundred forty thousand, three hundred forty-seven".