137678071 has 4 divisors (see below), whose sum is σ = 138474072. Its totient is φ = 136882072.

The previous prime is 137678059. The next prime is 137678081. The reversal of 137678071 is 170876731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170876731 = 139 ⋅1229329.

It is a cyclic number.

It is not a de Polignac number, because 137678071 - 2⁵ = 137678039 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 (137678011) 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, 397741 + ... + 398086.

It is an arithmetic number, because the mean of its divisors is an integer number (34618518).

Almost surely, 2^137678071 is an apocalyptic number.

137678071 is a deficient number, since it is larger than the sum of its proper divisors (796001).

137678071 is an equidigital number, since it uses as much as digits as its factorization.

137678071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796000.

The product of its (nonzero) digits is 49392, while the sum is 40.

The square root of 137678071 is about 11733.6299157592. The cubic root of 137678071 is about 516.3627727065.

The spelling of 137678071 in words is "one hundred thirty-seven million, six hundred seventy-eight thousand, seventy-one".