101643560 has 16 divisors (see below), whose sum is σ = 228698100. Its totient is φ = 40657408.

The previous prime is 101643557. The next prime is 101643589. The reversal of 101643560 is 65346101.

It can be written as a sum of positive squares in 2 ways, for example, as 96864964 + 4778596 = 9842^2 + 2186^2 .

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 3 ways as a sum of consecutive naturals, for example, 1270505 + ... + 1270584.

Almost surely, 2^101643560 is an apocalyptic number.

101643560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101643560 is an abundant number, since it is smaller than the sum of its proper divisors (127054540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101643560 is a wasteful number, since it uses less digits than its factorization.

101643560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541100 (or 2541096 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 101643560 is about 10081.8430854681. The cubic root of 101643560 is about 466.6879876880.

Adding to 101643560 its reverse (65346101), we get a palindrome (166989661).

The spelling of 101643560 in words is "one hundred one million, six hundred forty-three thousand, five hundred sixty".