137220166 has 16 divisors (see below), whose sum is σ = 221276160. Its totient is φ = 63615240.

The previous prime is 137220163. The next prime is 137220179. The reversal of 137220166 is 661022731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137220163) 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 7 ways as a sum of consecutive naturals, for example, 36630 + ... + 40201.

It is an arithmetic number, because the mean of its divisors is an integer number (13829760).

Almost surely, 2^137220166 is an apocalyptic number.

137220166 is a deficient number, since it is larger than the sum of its proper divisors (84055994).

137220166 is a wasteful number, since it uses less digits than its factorization.

137220166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76899.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 137220166 is about 11714.1011605671. The cubic root of 137220166 is about 515.7896780204.

Adding to 137220166 its reverse (661022731), we get a palindrome (798242897).

The spelling of 137220166 in words is "one hundred thirty-seven million, two hundred twenty thousand, one hundred sixty-six".