166654106 has 4 divisors (see below), whose sum is σ = 249981162. Its totient is φ = 83327052.

The previous prime is 166654091. The next prime is 166654129. The reversal of 166654106 is 601456661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 601456661 = 13 ⋅46265897.

It can be written as a sum of positive squares in only one way, i.e., 162690025 + 3964081 = 12755^2 + 1991^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41663525 + ... + 41663528.

Almost surely, 2^166654106 is an apocalyptic number.

166654106 is a deficient number, since it is larger than the sum of its proper divisors (83327056).

166654106 is an equidigital number, since it uses as much as digits as its factorization.

166654106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83327055.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 166654106 is about 12909.4580056639. The cubic root of 166654106 is about 550.3073829993.

The spelling of 166654106 in words is "one hundred sixty-six million, six hundred fifty-four thousand, one hundred six".