106556989 has 8 divisors (see below), whose sum is σ = 132850368. Its totient is φ = 83031360.

The previous prime is 106556963. The next prime is 106557007. The reversal of 106556989 is 989655601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106556989 is a prime.

It is a super-2 number, since 2×106556989² = 22708783809492242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106556689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 691852 + ... + 692005.

It is an arithmetic number, because the mean of its divisors is an integer number (16606296).

Almost surely, 2^106556989 is an apocalyptic number.

It is an amenable number.

106556989 is a deficient number, since it is larger than the sum of its proper divisors (26293379).

106556989 is a wasteful number, since it uses less digits than its factorization.

106556989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383875.

The product of its (nonzero) digits is 583200, while the sum is 49.

The square root of 106556989 is about 10322.6444770708. The cubic root of 106556989 is about 474.0898382893.

The spelling of 106556989 in words is "one hundred six million, five hundred fifty-six thousand, nine hundred eighty-nine".