137689678 has 8 divisors (see below), whose sum is σ = 236039472. Its totient is φ = 59009856.

The previous prime is 137689667. The next prime is 137689697. The reversal of 137689678 is 876986731.

137689678 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4917475 + ... + 4917502.

It is an arithmetic number, because the mean of its divisors is an integer number (29504934).

Almost surely, 2^137689678 is an apocalyptic number.

137689678 is a deficient number, since it is larger than the sum of its proper divisors (98349794).

137689678 is an equidigital number, since it uses as much as digits as its factorization.

137689678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9834986.

The product of its digits is 3048192, while the sum is 55.

The square root of 137689678 is about 11734.1245093104. The cubic root of 137689678 is about 516.3772830160.

The spelling of 137689678 in words is "one hundred thirty-seven million, six hundred eighty-nine thousand, six hundred seventy-eight".