137930647 has 2 divisors, whose sum is σ = 137930648. Its totient is φ = 137930646.

The previous prime is 137930621. The next prime is 137930659. The reversal of 137930647 is 746039731.

137930647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137930647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137930447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68965323 + 68965324.

It is an arithmetic number, because the mean of its divisors is an integer number (68965324).

Almost surely, 2^137930647 is an apocalyptic number.

137930647 is a deficient number, since it is larger than the sum of its proper divisors (1).

137930647 is an equidigital number, since it uses as much as digits as its factorization.

137930647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 40.

The square root of 137930647 is about 11744.3878937985. The cubic root of 137930647 is about 516.6783426197.

The spelling of 137930647 in words is "one hundred thirty-seven million, nine hundred thirty thousand, six hundred forty-seven".