101563970 has 16 divisors (see below), whose sum is σ = 187274808. Its totient is φ = 39634560.

The previous prime is 101563939. The next prime is 101563981. The reversal of 101563970 is 79365101.

It can be written as a sum of positive squares in 4 ways, for example, as 21836929 + 79727041 = 4673^2 + 8929^2 .

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 7 ways as a sum of consecutive naturals, for example, 123449 + ... + 124268.

Almost surely, 2^101563970 is an apocalyptic number.

101563970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101563970 is a deficient number, since it is larger than the sum of its proper divisors (85710838).

101563970 is a wasteful number, since it uses less digits than its factorization.

101563970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247765.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 101563970 is about 10077.8951175332. The cubic root of 101563970 is about 466.5661455826.

The spelling of 101563970 in words is "one hundred one million, five hundred sixty-three thousand, nine hundred seventy".