106668406 has 24 divisors (see below), whose sum is σ = 173910024. Its totient is φ = 49046400.

The previous prime is 106668389. The next prime is 106668431. The reversal of 106668406 is 604866601.

It is a super-2 number, since 2×106668406² = 22756297677161672, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135145 + ... + 135931.

It is an arithmetic number, because the mean of its divisors is an integer number (7246251).

Almost surely, 2^106668406 is an apocalyptic number.

106668406 is a deficient number, since it is larger than the sum of its proper divisors (67241618).

106668406 is a wasteful number, since it uses less digits than its factorization.

106668406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216 (or 1203 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 106668406 is about 10328.0397946561. The cubic root of 106668406 is about 474.2550183443.

The spelling of 106668406 in words is "one hundred six million, six hundred sixty-eight thousand, four hundred six".