135487905 has 32 divisors (see below), whose sum is σ = 248832000. Its totient is φ = 61666752.

The previous prime is 135487889. The next prime is 135487907. The reversal of 135487905 is 509784531.

It is not a de Polignac number, because 135487905 - 2⁴ = 135487889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135487907) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22396 + ... + 27794.

It is an arithmetic number, because the mean of its divisors is an integer number (7776000).

Almost surely, 2^135487905 is an apocalyptic number.

135487905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135487905 is a deficient number, since it is larger than the sum of its proper divisors (113344095).

135487905 is a wasteful number, since it uses less digits than its factorization.

135487905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5653.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 135487905 is about 11639.9271904939. The cubic root of 135487905 is about 513.6100452891.

The spelling of 135487905 in words is "one hundred thirty-five million, four hundred eighty-seven thousand, nine hundred five".