135076661 has 2 divisors, whose sum is σ = 135076662. Its totient is φ = 135076660.

The previous prime is 135076621. The next prime is 135076663. The reversal of 135076661 is 166670531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70980625 + 64096036 = 8425^2 + 8006^2 .

It is a cyclic number.

It is not a de Polignac number, because 135076661 - 2²⁶ = 67967797 is a prime.

Together with 135076663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135076663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67538330 + 67538331.

It is an arithmetic number, because the mean of its divisors is an integer number (67538331).

Almost surely, 2^135076661 is an apocalyptic number.

It is an amenable number.

135076661 is a deficient number, since it is larger than the sum of its proper divisors (1).

135076661 is an equidigital number, since it uses as much as digits as its factorization.

135076661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 135076661 is about 11622.2485345995. The cubic root of 135076661 is about 513.0898681961.

The spelling of 135076661 in words is "one hundred thirty-five million, seventy-six thousand, six hundred sixty-one".