106635621 has 8 divisors (see below), whose sum is σ = 145206144. Its totient is φ = 69577760.

The previous prime is 106635601. The next prime is 106635631. The reversal of 106635621 is 126536601.

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 106635621 - 2¹¹ = 106633573 is a prime.

It is a super-2 number, since 2×106635621² = 22742311332111282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106635601) by changing a digit.

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, 378000 + ... + 378281.

It is an arithmetic number, because the mean of its divisors is an integer number (18150768).

Almost surely, 2^106635621 is an apocalyptic number.

It is an amenable number.

106635621 is a deficient number, since it is larger than the sum of its proper divisors (38570523).

106635621 is an equidigital number, since it uses as much as digits as its factorization.

106635621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756331.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 106635621 is about 10326.4524886333. The cubic root of 106635621 is about 474.2064252491.

The spelling of 106635621 in words is "one hundred six million, six hundred thirty-five thousand, six hundred twenty-one".