106661615 has 8 divisors (see below), whose sum is σ = 128117808. Its totient is φ = 85246720.

The previous prime is 106661609. The next prime is 106661663. The reversal of 106661615 is 516166601.

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

It is not a de Polignac number, because 106661615 - 2⁶ = 106661551 is a prime.

It is a super-2 number, since 2×106661615² = 22753400228816450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 4322 + ... + 15231.

It is an arithmetic number, because the mean of its divisors is an integer number (16014726).

Almost surely, 2^106661615 is an apocalyptic number.

106661615 is a deficient number, since it is larger than the sum of its proper divisors (21456193).

106661615 is a wasteful number, since it uses less digits than its factorization.

106661615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20649.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 106661615 is about 10327.7110242299. The cubic root of 106661615 is about 474.2449537141.

The spelling of 106661615 in words is "one hundred six million, six hundred sixty-one thousand, six hundred fifteen".