137609306 has 16 divisors (see below), whose sum is σ = 211264200. Its totient is φ = 67199808.

The previous prime is 137609281. The next prime is 137609309. The reversal of 137609306 is 603906731.

It can be written as a sum of positive squares in 4 ways, for example, as 134351281 + 3258025 = 11591^2 + 1805^2 .

It is not an unprimeable number, because it can be changed into a prime (137609309) 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, 21440 + ... + 27108.

Almost surely, 2^137609306 is an apocalyptic number.

137609306 is a deficient number, since it is larger than the sum of its proper divisors (73654894).

137609306 is a wasteful number, since it uses less digits than its factorization.

137609306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5953.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 137609306 is about 11730.6992971434. The cubic root of 137609306 is about 516.2767904847.

The spelling of 137609306 in words is "one hundred thirty-seven million, six hundred nine thousand, three hundred six".