166663370 has 16 divisors (see below), whose sum is σ = 302358528. Its totient is φ = 66139920.

The previous prime is 166663369. The next prime is 166663403. The reversal of 166663370 is 73366661.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64346 + ... + 66885.

It is an arithmetic number, because the mean of its divisors is an integer number (18897408).

Almost surely, 2^166663370 is an apocalyptic number.

166663370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166663370 is a deficient number, since it is larger than the sum of its proper divisors (135695158).

166663370 is a wasteful number, since it uses less digits than its factorization.

166663370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131365.

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 166663370 is about 12909.8168073757. The cubic root of 166663370 is about 550.3175796740.

The spelling of 166663370 in words is "one hundred sixty-six million, six hundred sixty-three thousand, three hundred seventy".