137668361 has 8 divisors (see below), whose sum is σ = 140542848. Its totient is φ = 134820000.

The previous prime is 137668351. The next prime is 137668387. The reversal of 137668361 is 163866731.

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 137668361 - 2²² = 133474057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137668351) 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, 4301 + ... + 17141.

It is an arithmetic number, because the mean of its divisors is an integer number (17567856).

Almost surely, 2^137668361 is an apocalyptic number.

It is an amenable number.

137668361 is a deficient number, since it is larger than the sum of its proper divisors (2874487).

137668361 is a wasteful number, since it uses less digits than its factorization.

137668361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13063.

The product of its digits is 108864, while the sum is 41.

The square root of 137668361 is about 11733.2161405132. The cubic root of 137668361 is about 516.3506332753.

The spelling of 137668361 in words is "one hundred thirty-seven million, six hundred sixty-eight thousand, three hundred sixty-one".