135680629 has 4 divisors (see below), whose sum is σ = 155063584. Its totient is φ = 116297676.

The previous prime is 135680599. The next prime is 135680651. The reversal of 135680629 is 926086531.

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: 926086531 = 1193 ⋅776267.

It is a cyclic number.

It is not a de Polignac number, because 135680629 - 2¹³ = 135672437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135680591 and 135680600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135680659) 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, 9691467 + ... + 9691480.

It is an arithmetic number, because the mean of its divisors is an integer number (38765896).

Almost surely, 2^135680629 is an apocalyptic number.

It is an amenable number.

135680629 is a deficient number, since it is larger than the sum of its proper divisors (19382955).

135680629 is an equidigital number, since it uses as much as digits as its factorization.

135680629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19382954.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 135680629 is about 11648.2028227534. The cubic root of 135680629 is about 513.8534571417.

The spelling of 135680629 in words is "one hundred thirty-five million, six hundred eighty thousand, six hundred twenty-nine".