166640062 has 4 divisors (see below), whose sum is σ = 249960096. Its totient is φ = 83320030.

The previous prime is 166640059. The next prime is 166640063. The reversal of 166640062 is 260046661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 260046661 = 7 ⋅37149523.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166640063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41660014 + ... + 41660017.

It is an arithmetic number, because the mean of its divisors is an integer number (62490024).

Almost surely, 2^166640062 is an apocalyptic number.

166640062 is a deficient number, since it is larger than the sum of its proper divisors (83320034).

166640062 is an equidigital number, since it uses as much as digits as its factorization.

166640062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83320033.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 166640062 is about 12908.9140519255. The cubic root of 166640062 is about 550.2919243663.

The spelling of 166640062 in words is "one hundred sixty-six million, six hundred forty thousand, sixty-two".