135876997 has 4 divisors (see below), whose sum is σ = 136445760. Its totient is φ = 135308236.

The previous prime is 135876989. The next prime is 135877003. The reversal of 135876997 is 799678531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 799678531 = 991 ⋅806941.

It is a cyclic number.

It is not a de Polignac number, because 135876997 - 2³ = 135876989 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 (135876497) 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, 284023 + ... + 284500.

It is an arithmetic number, because the mean of its divisors is an integer number (34111440).

Almost surely, 2^135876997 is an apocalyptic number.

It is an amenable number.

135876997 is a deficient number, since it is larger than the sum of its proper divisors (568763).

135876997 is an equidigital number, since it uses as much as digits as its factorization.

135876997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568762.

The product of its digits is 2857680, while the sum is 55.

The square root of 135876997 is about 11656.6288866035. The cubic root of 135876997 is about 514.1012344319.

The spelling of 135876997 in words is "one hundred thirty-five million, eight hundred seventy-six thousand, nine hundred ninety-seven".