10649643 has 4 divisors (see below), whose sum is σ = 14199528. Its totient is φ = 7099760.

The previous prime is 10649629. The next prime is 10649663. The reversal of 10649643 is 34694601.

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 10649643 - 2¹⁰ = 10648619 is a prime.

It is a super-2 number, since 2×10649643² = 226829792054898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10649663) 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, 1774938 + ... + 1774943.

It is an arithmetic number, because the mean of its divisors is an integer number (3549882).

Almost surely, 2^10649643 is an apocalyptic number.

10649643 is a deficient number, since it is larger than the sum of its proper divisors (3549885).

10649643 is an equidigital number, since it uses as much as digits as its factorization.

10649643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549884.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 10649643 is about 3263.3790769691. The cubic root of 10649643 is about 220.0113148451.

The spelling of 10649643 in words is "ten million, six hundred forty-nine thousand, six hundred forty-three".