137677891 has 8 divisors (see below), whose sum is σ = 148367520. Its totient is φ = 127002432.

The previous prime is 137677889. The next prime is 137677963. The reversal of 137677891 is 198776731.

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

It is a cyclic number.

It is not a de Polignac number, because 137677891 - 2¹ = 137677889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137677871) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 25530 + ... + 30448.

It is an arithmetic number, because the mean of its divisors is an integer number (18545940).

Almost surely, 2^137677891 is an apocalyptic number.

137677891 is a deficient number, since it is larger than the sum of its proper divisors (10689629).

137677891 is a wasteful number, since it uses less digits than its factorization.

137677891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7085.

The product of its digits is 444528, while the sum is 49.

The square root of 137677891 is about 11733.6222454961. The cubic root of 137677891 is about 516.3625476759.

The spelling of 137677891 in words is "one hundred thirty-seven million, six hundred seventy-seven thousand, eight hundred ninety-one".