166213301 has 8 divisors (see below), whose sum is σ = 176105664. Its totient is φ = 156333760.

The previous prime is 166213277. The next prime is 166213319. The reversal of 166213301 is 103312661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166213301 - 2⁶ = 166213237 is a prime.

It is a super-2 number, since 2×166213301² = 55253722858633202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166213321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41096 + ... + 44958.

It is an arithmetic number, because the mean of its divisors is an integer number (22013208).

Almost surely, 2^166213301 is an apocalyptic number.

It is an amenable number.

166213301 is a deficient number, since it is larger than the sum of its proper divisors (9892363).

166213301 is a wasteful number, since it uses less digits than its factorization.

166213301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6411.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 166213301 is about 12892.3737535025. The cubic root of 166213301 is about 549.8217615283.

Adding to 166213301 its reverse (103312661), we get a palindrome (269525962).

The spelling of 166213301 in words is "one hundred sixty-six million, two hundred thirteen thousand, three hundred one".