106651 has 4 divisors (see below), whose sum is σ = 111312. Its totient is φ = 101992.

The previous prime is 106649. The next prime is 106657. The reversal of 106651 is 156601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 106651 - 2¹ = 106649 is a prime.

It is a super-2 number, since 2×106651² = 22748871602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106657) 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, 2296 + ... + 2341.

It is an arithmetic number, because the mean of its divisors is an integer number (27828).

2¹⁰⁶⁶⁵¹ is an apocalyptic number.

106651 is a deficient number, since it is larger than the sum of its proper divisors (4661).

106651 is an equidigital number, since it uses as much as digits as its factorization.

106651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4660.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 106651 is about 326.5746469033. The cubic root of 106651 is about 47.4229220853.

It can be divided in two parts, 106 and 651, that multiplied together give a triangular number (69006 = T₃₇₁).

The spelling of 106651 in words is "one hundred six thousand, six hundred fifty-one".