137066729 has 4 divisors (see below), whose sum is σ = 143026176. Its totient is φ = 131107284.

The previous prime is 137066701. The next prime is 137066749. The reversal of 137066729 is 927660731.

137066729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 137066729 - 2⁸ = 137066473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137066749) 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, 2979689 + ... + 2979734.

It is an arithmetic number, because the mean of its divisors is an integer number (35756544).

Almost surely, 2^137066729 is an apocalyptic number.

It is an amenable number.

137066729 is a deficient number, since it is larger than the sum of its proper divisors (5959447).

137066729 is an equidigital number, since it uses as much as digits as its factorization.

137066729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5959446.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 137066729 is about 11707.5500853082. The cubic root of 137066729 is about 515.5973575582.

The spelling of 137066729 in words is "one hundred thirty-seven million, sixty-six thousand, seven hundred twenty-nine".