137545665 has 8 divisors (see below), whose sum is σ = 220073088. Its totient is φ = 73357680.

The previous prime is 137545663. The next prime is 137545669. The reversal of 137545665 is 566545731.

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

It is not a de Polignac number, because 137545665 - 2¹ = 137545663 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (137545663) 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, 4584841 + ... + 4584870.

It is an arithmetic number, because the mean of its divisors is an integer number (27509136).

Almost surely, 2^137545665 is an apocalyptic number.

137545665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137545665 is a deficient number, since it is larger than the sum of its proper divisors (82527423).

137545665 is an equidigital number, since it uses as much as digits as its factorization.

137545665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9169719.

The product of its digits is 378000, while the sum is 42.

The square root of 137545665 is about 11727.9864000603. The cubic root of 137545665 is about 516.1971896724.

The spelling of 137545665 in words is "one hundred thirty-seven million, five hundred forty-five thousand, six hundred sixty-five".