135898660 has 12 divisors (see below), whose sum is σ = 285387228. Its totient is φ = 54359456.

The previous prime is 135898643. The next prime is 135898661. The reversal of 135898660 is 66898531.

It can be written as a sum of positive squares in 2 ways, for example, as 45724644 + 90174016 = 6762^2 + 9496^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 135898660.

It is not an unprimeable number, because it can be changed into a prime (135898661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3397447 + ... + 3397486.

It is an arithmetic number, because the mean of its divisors is an integer number (23782269).

Almost surely, 2^135898660 is an apocalyptic number.

135898660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135898660 is an abundant number, since it is smaller than the sum of its proper divisors (149488568).

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

135898660 is a wasteful number, since it uses less digits than its factorization.

135898660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6794942 (or 6794940 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 135898660 is about 11657.5580633338. The cubic root of 135898660 is about 514.1285541978.

The spelling of 135898660 in words is "one hundred thirty-five million, eight hundred ninety-eight thousand, six hundred sixty".