136641290 has 8 divisors (see below), whose sum is σ = 245954340. Its totient is φ = 54656512.

The previous prime is 136641289. The next prime is 136641299. The reversal of 136641290 is 92146631.

It can be written as a sum of positive squares in 2 ways, for example, as 119093569 + 17547721 = 10913^2 + 4189^2 .

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

It is not an unprimeable number, because it can be changed into a prime (136641299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6832055 + ... + 6832074.

Almost surely, 2^136641290 is an apocalyptic number.

136641290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136641290 is a deficient number, since it is larger than the sum of its proper divisors (109313050).

136641290 is a wasteful number, since it uses less digits than its factorization.

136641290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13664136.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 136641290 is about 11689.3665354458. The cubic root of 136641290 is about 515.0633535032.

The spelling of 136641290 in words is "one hundred thirty-six million, six hundred forty-one thousand, two hundred ninety".