135667789 has 16 divisors (see below), whose sum is σ = 142524928. Its totient is φ = 129019392.

The previous prime is 135667783. The next prime is 135667801. The reversal of 135667789 is 987766531.

It is a cyclic number.

It is not a de Polignac number, because 135667789 - 2²³ = 127279181 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135667783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369484 + ... + 369850.

It is an arithmetic number, because the mean of its divisors is an integer number (8907808).

Almost surely, 2^135667789 is an apocalyptic number.

It is an amenable number.

135667789 is a deficient number, since it is larger than the sum of its proper divisors (6857139).

135667789 is a wasteful number, since it uses less digits than its factorization.

135667789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604.

The product of its digits is 1905120, while the sum is 52.

The square root of 135667789 is about 11647.6516517279. The cubic root of 135667789 is about 513.8372472951.

The spelling of 135667789 in words is "one hundred thirty-five million, six hundred sixty-seven thousand, seven hundred eighty-nine".