100401606 has 20 divisors (see below), whose sum is σ = 224974332. Its totient is φ = 33467148.

The previous prime is 100401599. The next prime is 100401611. The reversal of 100401606 is 606104001.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 9 ways as a sum of consecutive naturals, for example, 309720 + ... + 310043.

Almost surely, 2^100401606 is an apocalyptic number.

100401606 is an abundant number, since it is smaller than the sum of its proper divisors (124572726).

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

100401606 is an equidigital number, since it uses as much as digits as its factorization.

100401606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619777 (or 619768 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 100401606 is about 10020.0601794600. The cubic root of 100401606 is about 464.7794167098.

Adding to 100401606 its reverse (606104001), we get a palindrome (706505607).

The spelling of 100401606 in words is "one hundred million, four hundred one thousand, six hundred six".