106621506 has 24 divisors (see below), whose sum is σ = 231429744. Its totient is φ = 35476440.

The previous prime is 106621477. The next prime is 106621507. The reversal of 106621506 is 605126601.

It is a happy number.

It is a super-2 number, since 2×106621506² = 22736291083416072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 106621506.

It is not an unprimeable number, because it can be changed into a prime (106621507) 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 11 ways as a sum of consecutive naturals, for example, 5521 + ... + 15611.

It is an arithmetic number, because the mean of its divisors is an integer number (9642906).

Almost surely, 2^106621506 is an apocalyptic number.

106621506 is an abundant number, since it is smaller than the sum of its proper divisors (124808238).

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

106621506 is a wasteful number, since it uses less digits than its factorization.

106621506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10686 (or 10683 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 106621506 is about 10325.7690270507. The cubic root of 106621506 is about 474.1855012871.

The spelling of 106621506 in words is "one hundred six million, six hundred twenty-one thousand, five hundred six".