137191706 has 8 divisors (see below), whose sum is σ = 205882560. Its totient is φ = 68564188.

The previous prime is 137191657. The next prime is 137191727. The reversal of 137191706 is 607191731.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9986 + ... + 19341.

It is an arithmetic number, because the mean of its divisors is an integer number (25735320).

Almost surely, 2^137191706 is an apocalyptic number.

137191706 is a deficient number, since it is larger than the sum of its proper divisors (68690854).

137191706 is a wasteful number, since it uses less digits than its factorization.

137191706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31668.

The product of its (nonzero) digits is 7938, while the sum is 35.

The square root of 137191706 is about 11712.8863223375. The cubic root of 137191706 is about 515.7540166216.

The spelling of 137191706 in words is "one hundred thirty-seven million, one hundred ninety-one thousand, seven hundred six".