137736671 has 4 divisors (see below), whose sum is σ = 141096144. Its totient is φ = 134377200.

The previous prime is 137736661. The next prime is 137736679. The reversal of 137736671 is 176637731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 176637731 = 3067 ⋅57593.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137736671 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 3359431 = 137736671 / (1 + 3 + 7 + 7 + 3 + 6 + 6 + 7 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137736679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1679675 + ... + 1679756.

It is an arithmetic number, because the mean of its divisors is an integer number (35274036).

Almost surely, 2^137736671 is an apocalyptic number.

137736671 is a deficient number, since it is larger than the sum of its proper divisors (3359473).

137736671 is an equidigital number, since it uses as much as digits as its factorization.

137736671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3359472.

The product of its digits is 111132, while the sum is 41.

The square root of 137736671 is about 11736.1267460777. The cubic root of 137736671 is about 516.4360222473.

The spelling of 137736671 in words is "one hundred thirty-seven million, seven hundred thirty-six thousand, six hundred seventy-one".