135698550 has 144 divisors (see below), whose sum is σ = 374962608. Its totient is φ = 32448000.

The previous prime is 135698527. The next prime is 135698579. The reversal of 135698550 is 55896531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1343500 + ... + 1343600.

It is an arithmetic number, because the mean of its divisors is an integer number (2603907).

Almost surely, 2^135698550 is an apocalyptic number.

135698550 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 135698550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187481304).

135698550 is an abundant number, since it is smaller than the sum of its proper divisors (239264058).

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

135698550 is a wasteful number, since it uses less digits than its factorization.

135698550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 42.

The square root of 135698550 is about 11648.9720576538. The cubic root of 135698550 is about 513.8760797824.

The spelling of 135698550 in words is "one hundred thirty-five million, six hundred ninety-eight thousand, five hundred fifty".