135686002 has 4 divisors (see below), whose sum is σ = 203529006. Its totient is φ = 67843000.

The previous prime is 135685987. The next prime is 135686003. The reversal of 135686002 is 200686531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 94070601 + 41615401 = 9699^2 + 6451^2 .

It is a super-2 number, since 2×135686002² = 36821382277488008, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (135686003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33921499 + ... + 33921502.

Almost surely, 2^135686002 is an apocalyptic number.

135686002 is a deficient number, since it is larger than the sum of its proper divisors (67843004).

135686002 is an equidigital number, since it uses as much as digits as its factorization.

135686002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67843003.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 135686002 is about 11648.4334569074. The cubic root of 135686002 is about 513.8602399772.

The spelling of 135686002 in words is "one hundred thirty-five million, six hundred eighty-six thousand, two".