10643655 has 32 divisors (see below), whose sum is σ = 18724608. Its totient is φ = 5120000.

The previous prime is 10643653. The next prime is 10643657. The reversal of 10643655 is 55634601.

It is an interprime number because it is at equal distance from previous prime (10643653) and next prime (10643657).

It is not a de Polignac number, because 10643655 - 2¹ = 10643653 is a prime.

It is a super-2 number, since 2×10643655² = 226574783518050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10643653) 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 31 ways as a sum of consecutive naturals, for example, 41287 + ... + 41543.

It is an arithmetic number, because the mean of its divisors is an integer number (585144).

Almost surely, 2^10643655 is an apocalyptic number.

10643655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10643655 is a deficient number, since it is larger than the sum of its proper divisors (8080953).

10643655 is a wasteful number, since it uses less digits than its factorization.

10643655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 10643655 is about 3262.4614940256. The cubic root of 10643655 is about 219.9700716864.

It can be divided in two parts, 106436 and 55, that added together give a triangular number (106491 = T₄₆₁).

The spelling of 10643655 in words is "ten million, six hundred forty-three thousand, six hundred fifty-five".