106686554 has 8 divisors (see below), whose sum is σ = 172339860. Its totient is φ = 49239936.

The previous prime is 106686529. The next prime is 106686557. The reversal of 106686554 is 455686601.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 103571329 + 3115225 = 10177^2 + 1765^2 .

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

It is a super-2 number, since 2×106686554² = 22764041608789832, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (106686557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2051639 + ... + 2051690.

Almost surely, 2^106686554 is an apocalyptic number.

106686554 is a deficient number, since it is larger than the sum of its proper divisors (65653306).

106686554 is a wasteful number, since it uses less digits than its factorization.

106686554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4103344.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 106686554 is about 10328.9183363990. The cubic root of 106686554 is about 474.2819125683.

The spelling of 106686554 in words is "one hundred six million, six hundred eighty-six thousand, five hundred fifty-four".