135677217 has 8 divisors (see below), whose sum is σ = 194818624. Its totient is φ = 83493648.

The previous prime is 135677209. The next prime is 135677251. The reversal of 135677217 is 712776531.

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

It is not a de Polignac number, because 135677217 - 2³ = 135677209 is a prime.

It is a super-4 number, since 4×135677217⁴ (a number of 34 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 3478903 = 135677217 / (1 + 3 + 5 + 6 + 7 + 7 + 2 + 1 + 7).

It is not an unprimeable number, because it can be changed into a prime (135677117) 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, 1739413 + ... + 1739490.

It is an arithmetic number, because the mean of its divisors is an integer number (24352328).

Almost surely, 2^135677217 is an apocalyptic number.

It is an amenable number.

135677217 is a deficient number, since it is larger than the sum of its proper divisors (59141407).

135677217 is a wasteful number, since it uses less digits than its factorization.

135677217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3478919.

The product of its digits is 61740, while the sum is 39.

The square root of 135677217 is about 11648.0563614708. The cubic root of 135677217 is about 513.8491497651.

The spelling of 135677217 in words is "one hundred thirty-five million, six hundred seventy-seven thousand, two hundred seventeen".