166903245 has 12 divisors (see below), whose sum is σ = 289299036. Its totient is φ = 89015040.

The previous prime is 166903241. The next prime is 166903267. The reversal of 166903245 is 542309661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 80245764 + 86657481 = 8958^2 + 9309^2 .

It is not a de Polignac number, because 166903245 - 2² = 166903241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166903241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1854436 + ... + 1854525.

It is an arithmetic number, because the mean of its divisors is an integer number (24108253).

Almost surely, 2^166903245 is an apocalyptic number.

166903245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166903245 is a deficient number, since it is larger than the sum of its proper divisors (122395791).

166903245 is a wasteful number, since it uses less digits than its factorization.

166903245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3708972 (or 3708969 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 166903245 is about 12919.1038775915. The cubic root of 166903245 is about 550.5814731902.

The spelling of 166903245 in words is "one hundred sixty-six million, nine hundred three thousand, two hundred forty-five".