166340753 has 4 divisors (see below), whose sum is σ = 166368768. Its totient is φ = 166312740.

The previous prime is 166340747. The next prime is 166340821. The reversal of 166340753 is 357043661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 357043661 = 13 ⋅27464897.

It is a cyclic number.

It is not a de Polignac number, because 166340753 - 2⁶ = 166340689 is a prime.

It is a super-3 number, since 3×166340753³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166340453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1193 + ... + 18278.

It is an arithmetic number, because the mean of its divisors is an integer number (41592192).

Almost surely, 2^166340753 is an apocalyptic number.

It is an amenable number.

166340753 is a deficient number, since it is larger than the sum of its proper divisors (28015).

166340753 is an equidigital number, since it uses as much as digits as its factorization.

166340753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28014.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 166340753 is about 12897.3157284762. The cubic root of 166340753 is about 549.9622596693.

The spelling of 166340753 in words is "one hundred sixty-six million, three hundred forty thousand, seven hundred fifty-three".