137745617 has 8 divisors (see below), whose sum is σ = 142371840. Its totient is φ = 133130880.

The previous prime is 137745613. The next prime is 137745623. The reversal of 137745617 is 716547731.

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 137745617 - 2² = 137745613 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137745613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26408 + ... + 31190.

It is an arithmetic number, because the mean of its divisors is an integer number (17796480).

Almost surely, 2^137745617 is an apocalyptic number.

It is an amenable number.

137745617 is a deficient number, since it is larger than the sum of its proper divisors (4626223).

137745617 is an equidigital number, since it uses as much as digits as its factorization.

137745617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5743.

The product of its digits is 123480, while the sum is 41.

The square root of 137745617 is about 11736.5078707425. The cubic root of 137745617 is about 516.4472028492.

It can be divided in two parts, 13774 and 5617, that added together give a palindrome (19391).

The spelling of 137745617 in words is "one hundred thirty-seven million, seven hundred forty-five thousand, six hundred seventeen".