137740785 has 128 divisors (see below), whose sum is σ = 294174720. Its totient is φ = 53415936.

The previous prime is 137740777. The next prime is 137740789. The reversal of 137740785 is 587047731.

It is a happy number.

It is not a de Polignac number, because 137740785 - 2³ = 137740777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137740789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1218889 + ... + 1219001.

It is an arithmetic number, because the mean of its divisors is an integer number (2298240).

Almost surely, 2^137740785 is an apocalyptic number.

137740785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137740785 is an abundant number, since it is smaller than the sum of its proper divisors (156433935).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

137740785 is a wasteful number, since it uses less digits than its factorization.

137740785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207.

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 137740785 is about 11736.3020155414. The cubic root of 137740785 is about 516.4411639346.

The spelling of 137740785 in words is "one hundred thirty-seven million, seven hundred forty thousand, seven hundred eighty-five".