135636990 has 32 divisors (see below), whose sum is σ = 326785536. Its totient is φ = 36030240.

The previous prime is 135636967. The next prime is 135637001. The reversal of 135636990 is 99636531.

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, 706 + ... + 16485.

It is an arithmetic number, because the mean of its divisors is an integer number (10212048).

Almost surely, 2^135636990 is an apocalyptic number.

135636990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135636990 is an abundant number, since it is smaller than the sum of its proper divisors (191148546).

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

135636990 is a wasteful number, since it uses less digits than its factorization.

135636990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17464.

The product of its (nonzero) digits is 131220, while the sum is 42.

The square root of 135636990 is about 11646.3294646854. The cubic root of 135636990 is about 513.7983609556.

The spelling of 135636990 in words is "one hundred thirty-five million, six hundred thirty-six thousand, nine hundred ninety".