10643641 has 8 divisors (see below), whose sum is σ = 11378304. Its totient is φ = 9931680.

The previous prime is 10643639. The next prime is 10643653. The reversal of 10643641 is 14634601.

10643641 = 319² + 320² + ... + 400².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10643641 - 2¹ = 10643639 is a prime.

It is a super-2 number, since 2×10643641² = 226574187473762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10643621) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4701 + ... + 6586.

It is an arithmetic number, because the mean of its divisors is an integer number (1422288).

Almost surely, 2^10643641 is an apocalyptic number.

It is an amenable number.

10643641 is a deficient number, since it is larger than the sum of its proper divisors (734663).

10643641 is a wasteful number, since it uses less digits than its factorization.

10643641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11351.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 10643641 is about 3262.4593484057. The cubic root of 10643641 is about 219.9699752414.

The spelling of 10643641 in words is "ten million, six hundred forty-three thousand, six hundred forty-one".