10643953 has 4 divisors (see below), whose sum is σ = 10672128. Its totient is φ = 10615780.

The previous prime is 10643939. The next prime is 10643981. The reversal of 10643953 is 35934601.

10643953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10643953 - 2⁹ = 10643441 is a prime.

It is a super-2 number, since 2×10643953² = 226587470932418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10643903) 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, 13513 + ... + 14278.

It is an arithmetic number, because the mean of its divisors is an integer number (2668032).

Almost surely, 2^10643953 is an apocalyptic number.

It is an amenable number.

10643953 is a deficient number, since it is larger than the sum of its proper divisors (28175).

10643953 is an equidigital number, since it uses as much as digits as its factorization.

10643953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28174.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 10643953 is about 3262.5071647431. The cubic root of 10643953 is about 219.9721245673.

The spelling of 10643953 in words is "ten million, six hundred forty-three thousand, nine hundred fifty-three".