137706247 has 16 divisors (see below), whose sum is σ = 163584000. Its totient is φ = 113433120.

The previous prime is 137706223. The next prime is 137706259. The reversal of 137706247 is 742607731.

It is a cyclic number.

It is not a de Polignac number, because 137706247 - 2¹⁵ = 137673479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137706277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30204 + ... + 34462.

It is an arithmetic number, because the mean of its divisors is an integer number (10224000).

Almost surely, 2^137706247 is an apocalyptic number.

137706247 is a deficient number, since it is larger than the sum of its proper divisors (25877753).

137706247 is a wasteful number, since it uses less digits than its factorization.

137706247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4446.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 137706247 is about 11734.8305058062. The cubic root of 137706247 is about 516.3979950795.

The spelling of 137706247 in words is "one hundred thirty-seven million, seven hundred six thousand, two hundred forty-seven".