137085385 has 8 divisors (see below), whose sum is σ = 165958920. Its totient is φ = 108697344.

The previous prime is 137085383. The next prime is 137085397. The reversal of 137085385 is 583580731.

It can be written as a sum of positive squares in 4 ways, for example, as 5363856 + 131721529 = 2316^2 + 11477^2 .

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 137085385 - 2¹ = 137085383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137085383) 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, 120750 + ... + 121879.

It is an arithmetic number, because the mean of its divisors is an integer number (20744865).

Almost surely, 2^137085385 is an apocalyptic number.

It is an amenable number.

137085385 is a deficient number, since it is larger than the sum of its proper divisors (28873535).

137085385 is a wasteful number, since it uses less digits than its factorization.

137085385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242747.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 137085385 is about 11708.3468090077. The cubic root of 137085385 is about 515.6207489579.

It can be divided in two parts, 137085 and 385, that multiplied together give a palindrome (52777725).

The spelling of 137085385 in words is "one hundred thirty-seven million, eighty-five thousand, three hundred eighty-five".