135670573 has 8 divisors (see below), whose sum is σ = 138898296. Its totient is φ = 132480000.

The previous prime is 135670499. The next prime is 135670597. The reversal of 135670573 is 375076531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 55621764 + 80048809 = 7458^2 + 8947^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135670573 - 2²¹ = 133573421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135679573) 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, 1828 + ... + 16573.

It is an arithmetic number, because the mean of its divisors is an integer number (17362287).

Almost surely, 2^135670573 is an apocalyptic number.

It is an amenable number.

135670573 is a deficient number, since it is larger than the sum of its proper divisors (3227723).

135670573 is a wasteful number, since it uses less digits than its factorization.

135670573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18575.

The product of its (nonzero) digits is 66150, while the sum is 37.

The square root of 135670573 is about 11647.7711601834. The cubic root of 135670573 is about 513.8407620403.

The spelling of 135670573 in words is "one hundred thirty-five million, six hundred seventy thousand, five hundred seventy-three".