135573660 has 36 divisors (see below), whose sum is σ = 411240648. Its totient is φ = 36152928.

The previous prime is 135573653. The next prime is 135573667. The reversal of 135573660 is 66375531.

It is a happy number.

135573660 is a `hidden beast` number, since 13 + 557 + 36 + 60 = 666.

It is an interprime number because it is at equal distance from previous prime (135573653) and next prime (135573667).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135573667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 376414 + ... + 376773.

Almost surely, 2^135573660 is an apocalyptic number.

135573660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135573660 is an abundant number, since it is smaller than the sum of its proper divisors (275666988).

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

135573660 is a wasteful number, since it uses less digits than its factorization.

135573660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753202 (or 753197 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 36.

The square root of 135573660 is about 11643.6102648620. The cubic root of 135573660 is about 513.7183829798.

The spelling of 135573660 in words is "one hundred thirty-five million, five hundred seventy-three thousand, six hundred sixty".