106661404 has 12 divisors (see below), whose sum is σ = 187847464. Its totient is φ = 52990704.

The previous prime is 106661381. The next prime is 106661431. The reversal of 106661404 is 404166601.

It is a super-2 number, since 2×106661404² = 22753310206502432, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 84294 + ... + 85549.

Almost surely, 2^106661404 is an apocalyptic number.

It is an amenable number.

106661404 is a deficient number, since it is larger than the sum of its proper divisors (81186060).

106661404 is a wasteful number, since it uses less digits than its factorization.

106661404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170004 (or 170002 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 106661404 is about 10327.7008089894. The cubic root of 106661404 is about 474.2446409938.

The spelling of 106661404 in words is "one hundred six million, six hundred sixty-one thousand, four hundred four".