10643955 has 64 divisors (see below), whose sum is σ = 21150720. Its totient is φ = 4460544.

The previous prime is 10643939. The next prime is 10643981. The reversal of 10643955 is 55934601.

It is a happy number.

It is not a de Polignac number, because 10643955 - 2⁴ = 10643939 is a prime.

It is a super-2 number, since 2×10643955² = 226587556084050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 119551 + ... + 119639.

It is an arithmetic number, because the mean of its divisors is an integer number (330480).

Almost surely, 2^10643955 is an apocalyptic number.

10643955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10643955 is a deficient number, since it is larger than the sum of its proper divisors (10506765).

10643955 is a wasteful number, since it uses less digits than its factorization.

10643955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 10643955 is about 3262.5074712558. The cubic root of 10643955 is about 219.9721383449.

The spelling of 10643955 in words is "ten million, six hundred forty-three thousand, nine hundred fifty-five".