135687784 has 16 divisors (see below), whose sum is σ = 254966400.
Its totient is φ = 67696752.
The previous prime is 135687763. The next prime is 135687809. The reversal of 135687784 is 487786531.
It is a happy number.
It is a super-2 number, since 2×1356877842 = 36822349453661312, which contains 22 as substring.
It is a house number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14424 + ... + 21895.
It is an arithmetic number, because the mean of its divisors is an integer number (15935400).
Almost surely, 2135687784 is an apocalyptic number.
It is an amenable number.
135687784 is a deficient number, since it is larger than the sum of its proper divisors (119278616).
135687784 is a wasteful number, since it uses less digits than its factorization.
135687784 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 36792 (or 36788 counting only the distinct ones).
The product of its digits is 1128960, while the sum is 49.
The square root of 135687784 is about 11648.5099476285.
The cubic root of 135687784 is about 513.8624895213.
The spelling of 135687784 in words is "one hundred thirty-five million, six hundred eighty-seven thousand, seven hundred eighty-four".