136490 has 8 divisors (see below), whose sum is σ = 245700. Its totient is φ = 54592.

The previous prime is 136483. The next prime is 136501. The reversal of 136490 is 94631.

It can be written as a sum of positive squares in 2 ways, for example, as 124609 + 11881 = 353^2 + 109^2 .

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

It is a Curzon number.

It is an unprimeable number.

136490 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6815 + ... + 6834.

2¹³⁶⁴⁹⁰ is an apocalyptic number.

136490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136490 is a deficient number, since it is larger than the sum of its proper divisors (109210).

136490 is a wasteful number, since it uses less digits than its factorization.

136490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13656.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 136490 is about 369.4455304913. The cubic root of 136490 is about 51.4873189628.

It can be divided in two parts, 1364 and 90, that multiplied together give a triangular number (122760 = T₄₉₅).

The spelling of 136490 in words is "one hundred thirty-six thousand, four hundred ninety".