135667540 has 24 divisors (see below), whose sum is σ = 285143040. Its totient is φ = 54221088.

The previous prime is 135667471. The next prime is 135667541. The reversal of 135667540 is 45766531.

It is a self number, because there is not a number n which added to its sum of digits gives 135667540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135667541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31221 + ... + 35299.

It is an arithmetic number, because the mean of its divisors is an integer number (11880960).

Almost surely, 2^135667540 is an apocalyptic number.

135667540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135667540 is an abundant number, since it is smaller than the sum of its proper divisors (149475500).

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

135667540 is a wasteful number, since it uses less digits than its factorization.

135667540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5751 (or 5749 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 135667540 is about 11647.6409628731. The cubic root of 135667540 is about 513.8369329352.

The spelling of 135667540 in words is "one hundred thirty-five million, six hundred sixty-seven thousand, five hundred forty".