106655561 has 4 divisors (see below), whose sum is σ = 108157824. Its totient is φ = 105153300.

The previous prime is 106655551. The next prime is 106655587. The reversal of 106655561 is 165556601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106655561 is a prime.

It is a super-2 number, since 2×106655561² = 22750817384449442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106655551) 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, 751025 + ... + 751166.

It is an arithmetic number, because the mean of its divisors is an integer number (27039456).

Almost surely, 2^106655561 is an apocalyptic number.

It is an amenable number.

106655561 is a deficient number, since it is larger than the sum of its proper divisors (1502263).

106655561 is an equidigital number, since it uses as much as digits as its factorization.

106655561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502262.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 106655561 is about 10327.4179251156. The cubic root of 106655561 is about 474.2359809977.

The spelling of 106655561 in words is "one hundred six million, six hundred fifty-five thousand, five hundred sixty-one".