137663817 has 8 divisors (see below), whose sum is σ = 186137280. Its totient is φ = 90483120.

The previous prime is 137663803. The next prime is 137663819. The reversal of 137663817 is 718366731.

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

It is a de Polignac number, because none of the positive numbers 2^k-137663817 is a prime.

It is a super-2 number, since 2×137663817² = 37902653022018978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (137663819) 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, 322942 + ... + 323367.

It is an arithmetic number, because the mean of its divisors is an integer number (23267160).

Almost surely, 2^137663817 is an apocalyptic number.

It is an amenable number.

137663817 is a deficient number, since it is larger than the sum of its proper divisors (48473463).

137663817 is an equidigital number, since it uses as much as digits as its factorization.

137663817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646383.

The product of its digits is 127008, while the sum is 42.

The square root of 137663817 is about 11733.0225006176. The cubic root of 137663817 is about 516.3449521755.

The spelling of 137663817 in words is "one hundred thirty-seven million, six hundred sixty-three thousand, eight hundred seventeen".