166653922 has 4 divisors (see below), whose sum is σ = 249980886. Its totient is φ = 83326960.

The previous prime is 166653913. The next prime is 166653931. The reversal of 166653922 is 229356661.

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

It is an interprime number because it is at equal distance from previous prime (166653913) and next prime (166653931).

It can be written as a sum of positive squares in only one way, i.e., 96412761 + 70241161 = 9819^2 + 8381^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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, 41663479 + ... + 41663482.

Almost surely, 2^166653922 is an apocalyptic number.

166653922 is a deficient number, since it is larger than the sum of its proper divisors (83326964).

166653922 is an equidigital number, since it uses as much as digits as its factorization.

166653922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83326963.

The product of its digits is 116640, while the sum is 40.

The square root of 166653922 is about 12909.4508791040. The cubic root of 166653922 is about 550.3071804708.

The spelling of 166653922 in words is "one hundred sixty-six million, six hundred fifty-three thousand, nine hundred twenty-two".