135680674 has 4 divisors (see below), whose sum is σ = 203521014. Its totient is φ = 67840336.

The previous prime is 135680669. The next prime is 135680759. The reversal of 135680674 is 476086531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 476086531 = 433 ⋅1099507.

It can be written as a sum of positive squares in only one way, i.e., 96530625 + 39150049 = 9825^2 + 6257^2 .

It is a super-3 number, since 3×135680674³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33920167 + ... + 33920170.

Almost surely, 2^135680674 is an apocalyptic number.

135680674 is a deficient number, since it is larger than the sum of its proper divisors (67840340).

135680674 is an equidigital number, since it uses as much as digits as its factorization.

135680674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67840339.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 135680674 is about 11648.2047543817. The cubic root of 135680674 is about 513.8535139501.

The spelling of 135680674 in words is "one hundred thirty-five million, six hundred eighty thousand, six hundred seventy-four".