135671657 has 16 divisors (see below), whose sum is σ = 156384000.
Its totient is φ = 116538240.
The previous prime is 135671629. The next prime is 135671659. The reversal of 135671657 is 756176531.
It is not a de Polignac number, because 135671657 - 28 = 135671401 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (135671659) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10469 + ... + 19517.
It is an arithmetic number, because the mean of its divisors is an integer number (9774000).
Almost surely, 2135671657 is an apocalyptic number.
It is an amenable number.
135671657 is a deficient number, since it is larger than the sum of its proper divisors (20712343).
135671657 is a wasteful number, since it uses less digits than its factorization.
135671657 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9136.
The product of its digits is 132300, while the sum is 41.
The square root of 135671657 is about 11647.8176925980.
The cubic root of 135671657 is about 513.8421305559.
The spelling of 135671657 in words is "one hundred thirty-five million, six hundred seventy-one thousand, six hundred fifty-seven".