135663750 has 120 divisors (see below), whose sum is σ = 380128320. Its totient is φ = 34920000.

The previous prime is 135663733. The next prime is 135663799. The reversal of 135663750 is 57366531.

It is a happy number.

135663750 is a `hidden beast` number, since 13 + 5 + 6 + 637 + 5 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 348556 + ... + 348944.

It is an arithmetic number, because the mean of its divisors is an integer number (3167736).

Almost surely, 2^135663750 is an apocalyptic number.

135663750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 135663750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190064160).

135663750 is an abundant number, since it is smaller than the sum of its proper divisors (244464570).

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

135663750 is a wasteful number, since it uses less digits than its factorization.

135663750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 430 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The square root of 135663750 is about 11647.4782678484. The cubic root of 135663750 is about 513.8321480517.

The spelling of 135663750 in words is "one hundred thirty-five million, six hundred sixty-three thousand, seven hundred fifty".