135678634 has 32 divisors (see below), whose sum is σ = 252193536. Its totient is φ = 53308800.

The previous prime is 135678623. The next prime is 135678637. The reversal of 135678634 is 436876531.

It is a Smith number, since the sum of its digits (43) 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 (135678637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25014 + ... + 29950.

It is an arithmetic number, because the mean of its divisors is an integer number (7881048).

Almost surely, 2^135678634 is an apocalyptic number.

135678634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

135678634 is a deficient number, since it is larger than the sum of its proper divisors (116514902).

135678634 is a wasteful number, since it uses less digits than its factorization.

135678634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110.

The product of its digits is 362880, while the sum is 43.

The square root of 135678634 is about 11648.1171869105. The cubic root of 135678634 is about 513.8509386228.

It can be divided in two parts, 13567 and 8634, that added together give a square (22201 = 149²).

The spelling of 135678634 in words is "one hundred thirty-five million, six hundred seventy-eight thousand, six hundred thirty-four".