137855705 has 16 divisors (see below), whose sum is σ = 184297680. Its totient is φ = 98289408.

The previous prime is 137855699. The next prime is 137855713. The reversal of 137855705 is 507558731.

It can be written as a sum of positive squares in 8 ways, for example, as 1713481 + 136142224 = 1309^2 + 11668^2 .

It is a cyclic number.

It is not a de Polignac number, because 137855705 - 2⁴ = 137855689 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 34682 + ... + 38451.

It is an arithmetic number, because the mean of its divisors is an integer number (11518605).

Almost surely, 2^137855705 is an apocalyptic number.

It is an amenable number.

137855705 is a deficient number, since it is larger than the sum of its proper divisors (46441975).

137855705 is a wasteful number, since it uses less digits than its factorization.

137855705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73180.

The product of its (nonzero) digits is 147000, while the sum is 41.

The square root of 137855705 is about 11741.1969151360. The cubic root of 137855705 is about 516.5847498757.

The spelling of 137855705 in words is "one hundred thirty-seven million, eight hundred fifty-five thousand, seven hundred five".