135617803 has 4 divisors (see below), whose sum is σ = 135861840. Its totient is φ = 135373768.

The previous prime is 135617759. The next prime is 135617809. The reversal of 135617803 is 308716531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 308716531 = 347 ⋅889673.

It is a cyclic number.

It is not a de Polignac number, because 135617803 - 2¹⁷ = 135486731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135617809) 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, 121183 + ... + 122296.

It is an arithmetic number, because the mean of its divisors is an integer number (33965460).

Almost surely, 2^135617803 is an apocalyptic number.

135617803 is a deficient number, since it is larger than the sum of its proper divisors (244037).

135617803 is an equidigital number, since it uses as much as digits as its factorization.

135617803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244036.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 135617803 is about 11645.5056996251. The cubic root of 135617803 is about 513.7741327712.

The spelling of 135617803 in words is "one hundred thirty-five million, six hundred seventeen thousand, eight hundred three".