134787613 has 12 divisors (see below), whose sum is σ = 143246908. Its totient is φ = 126783360.

The previous prime is 134787599. The next prime is 134787647. The reversal of 134787613 is 316787431.

It can be written as a sum of positive squares in 2 ways, for example, as 60793209 + 73994404 = 7797^2 + 8602^2 .

It is not a de Polignac number, because 134787613 - 2⁵ = 134787581 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 (134787673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30181 + ... + 34357.

Almost surely, 2^134787613 is an apocalyptic number.

It is an amenable number.

134787613 is a deficient number, since it is larger than the sum of its proper divisors (8459295).

134787613 is an equidigital number, since it uses as much as digits as its factorization.

134787613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4284 (or 4261 counting only the distinct ones).

The product of its digits is 84672, while the sum is 40.

The square root of 134787613 is about 11609.8067598044. The cubic root of 134787613 is about 512.7236230531.

The spelling of 134787613 in words is "one hundred thirty-four million, seven hundred eighty-seven thousand, six hundred thirteen".