166240297 has 16 divisors (see below), whose sum is σ = 188652672. Its totient is φ = 145601280.

The previous prime is 166240231. The next prime is 166240301. The reversal of 166240297 is 792042661.

It is a cyclic number.

It is not a de Polignac number, because 166240297 - 2¹⁵ = 166207529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (166240397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8722 + ... + 20212.

It is an arithmetic number, because the mean of its divisors is an integer number (11790792).

Almost surely, 2^166240297 is an apocalyptic number.

166240297 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

166240297 is a deficient number, since it is larger than the sum of its proper divisors (22412375).

166240297 is a wasteful number, since it uses less digits than its factorization.

166240297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11568.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 166240297 is about 12893.4206865362. The cubic root of 166240297 is about 549.8515268653.

The spelling of 166240297 in words is "one hundred sixty-six million, two hundred forty thousand, two hundred ninety-seven".