135605770 has 16 divisors (see below), whose sum is σ = 258448968. Its totient is φ = 51051520.

The previous prime is 135605699. The next prime is 135605773. The reversal of 135605770 is 77506531.

It can be written as a sum of positive squares in 4 ways, for example, as 130439241 + 5166529 = 11421^2 + 2273^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (135605773) 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, 398671 + ... + 399010.

Almost surely, 2^135605770 is an apocalyptic number.

135605770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135605770 is a deficient number, since it is larger than the sum of its proper divisors (122843198).

135605770 is a wasteful number, since it uses less digits than its factorization.

135605770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797705.

The product of its (nonzero) digits is 22050, while the sum is 34.

The square root of 135605770 is about 11644.9890510897. The cubic root of 135605770 is about 513.7589370598.

The spelling of 135605770 in words is "one hundred thirty-five million, six hundred five thousand, seven hundred seventy".