135861206 has 32 divisors (see below), whose sum is σ = 224084448. Its totient is φ = 61401600.

The previous prime is 135861199. The next prime is 135861239. The reversal of 135861206 is 602168531.

It is a happy number.

It is a congruent number.

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, 338606 + ... + 339006.

It is an arithmetic number, because the mean of its divisors is an integer number (7002639).

Almost surely, 2^135861206 is an apocalyptic number.

135861206 is a deficient number, since it is larger than the sum of its proper divisors (88223242).

135861206 is a wasteful number, since it uses less digits than its factorization.

135861206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 135861206 is about 11655.9515270097. The cubic root of 135861206 is about 514.0813181663.

The spelling of 135861206 in words is "one hundred thirty-five million, eight hundred sixty-one thousand, two hundred six".