137823665 has 8 divisors (see below), whose sum is σ = 189015360. Its totient is φ = 94507632.

The previous prime is 137823661. The next prime is 137823671. The reversal of 137823665 is 566328731.

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 137823665 - 2² = 137823661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137823661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1968875 + ... + 1968944.

It is an arithmetic number, because the mean of its divisors is an integer number (23626920).

Almost surely, 2^137823665 is an apocalyptic number.

It is an amenable number.

137823665 is a deficient number, since it is larger than the sum of its proper divisors (51191695).

137823665 is an equidigital number, since it uses as much as digits as its factorization.

137823665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937831.

The product of its digits is 181440, while the sum is 41.

The square root of 137823665 is about 11739.8324093660. The cubic root of 137823665 is about 516.5447257605.

The spelling of 137823665 in words is "one hundred thirty-seven million, eight hundred twenty-three thousand, six hundred sixty-five".