166314021 has 8 divisors (see below), whose sum is σ = 224875584. Its totient is φ = 109314240.

The previous prime is 166313971. The next prime is 166314023. The reversal of 166314021 is 120413661.

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

It is not a de Polignac number, because 166314021 - 2⁶ = 166313957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166313982 and 166314000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166314023) 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, 390196 + ... + 390621.

It is an arithmetic number, because the mean of its divisors is an integer number (28109448).

Almost surely, 2^166314021 is an apocalyptic number.

It is an amenable number.

166314021 is a deficient number, since it is larger than the sum of its proper divisors (58561563).

166314021 is an equidigital number, since it uses as much as digits as its factorization.

166314021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780891.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 166314021 is about 12896.2793471606. The cubic root of 166314021 is about 549.9327972987.

Adding to 166314021 its reverse (120413661), we get a palindrome (286727682).

The spelling of 166314021 in words is "one hundred sixty-six million, three hundred fourteen thousand, twenty-one".