106666073 has 4 divisors (see below), whose sum is σ = 107304960. Its totient is φ = 106027188.

The previous prime is 106666033. The next prime is 106666099. The reversal of 106666073 is 370666601.

It is a happy number.

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 not a de Polignac number, because 106666073 - 2²⁰ = 105617497 is a prime.

It is a super-2 number, since 2×106666073² = 22755302258482658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106666013) 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, 319193 + ... + 319526.

It is an arithmetic number, because the mean of its divisors is an integer number (26826240).

Almost surely, 2^106666073 is an apocalyptic number.

It is an amenable number.

106666073 is a deficient number, since it is larger than the sum of its proper divisors (638887).

106666073 is an equidigital number, since it uses as much as digits as its factorization.

106666073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638886.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 106666073 is about 10327.9268490825. The cubic root of 106666073 is about 474.2515607600.

The spelling of 106666073 in words is "one hundred six million, six hundred sixty-six thousand, seventy-three".