136981266 has 32 divisors (see below), whose sum is σ = 277968768. Its totient is φ = 44997120.

The previous prime is 136981259. The next prime is 136981283. The reversal of 136981266 is 662189631.

It is a super-3 number, since 3×136981266³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216771 + ... + 217401.

It is an arithmetic number, because the mean of its divisors is an integer number (8686524).

Almost surely, 2^136981266 is an apocalyptic number.

136981266 is an abundant number, since it is smaller than the sum of its proper divisors (140987502).

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

136981266 is a wasteful number, since it uses less digits than its factorization.

136981266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106.

The product of its digits is 93312, while the sum is 42.

The square root of 136981266 is about 11703.8996065414. The cubic root of 136981266 is about 515.4901745855.

The spelling of 136981266 in words is "one hundred thirty-six million, nine hundred eighty-one thousand, two hundred sixty-six".