137687090 has 16 divisors (see below), whose sum is σ = 248120280. Its totient is φ = 55011840.

The previous prime is 137687083. The next prime is 137687107. The reversal of 137687090 is 90786731.

It can be written as a sum of positive squares in 4 ways, for example, as 64464841 + 73222249 = 8029^2 + 8557^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1880 + ... + 16700.

Almost surely, 2^137687090 is an apocalyptic number.

137687090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137687090 is a deficient number, since it is larger than the sum of its proper divisors (110433190).

137687090 is a wasteful number, since it uses less digits than its factorization.

137687090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15757.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 137687090 is about 11734.0142321373. The cubic root of 137687090 is about 516.3740477389.

The spelling of 137687090 in words is "one hundred thirty-seven million, six hundred eighty-seven thousand, ninety".